Vibration damping device and design method thereof

Abstract

The present invention provides a vibration damping device and a design method for the device. The vibration damping device is used to reduce transformer vibration. The device includes a support frame and a vibration damping structure. The support frame has a receiving area for supporting the transformer. The vibration damping structure is disposed within the receiving area and has multiple pore structures. Each pore structure includes an inner ring and an outer ring. The inner ring is made of metal, and the outer ring is made of rubber. This invention solves the problem of insufficient transformer vibration damping in the prior art, which affects residents' lives.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer noise reduction, and in particular to a vibration reduction device and a design method for the vibration reduction device. Background Art

[0002] In order to ensure reliable power supply quality, substations are built around many residential communities. However, during operation, transformers continuously generate vibration noise, and the vibration will be transmitted through the building structure, affecting the lives of residents and even endangering their health. The existing vibration reduction devices have insufficient low-frequency vibration reduction effect and a single vibration reduction form, which cannot meet the performance improvement requirements of various modern industrial fields. Therefore, there is an urgent need to develop a transformer periodic structure vibration reduction device to purify the sound environment around the substation. Summary of the Invention

[0003] The main purpose of the present invention is to provide a vibration reduction device and a design method for the vibration reduction device to solve the problem that the transformer vibration reduction effect in the prior art is insufficient and affects the lives of residents.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a vibration reduction device is provided for reducing vibration of a transformer. The vibration reduction device includes a support frame and a vibration reduction structure, wherein the support frame has a receiving area and is used to support the transformer; the vibration reduction structure is arranged in the receiving area, and the vibration reduction structure has multiple pore structures, each pore structure includes an inner ring and an outer ring, the inner ring is made of metal material, and the outer ring is made of rubber material.

[0005] Furthermore, at least one of the plurality of pore structures has a filler, and the filler is made of a sound-insulating and / or sound-absorbing material.

[0006] Furthermore, the filler is made of a sound insulation and sound absorption composite material, and the sound absorption and noise reduction coefficient of the filler is above 0.86.

[0007] Furthermore, the inner ring of the pore structure is formed by laser cutting and welding of a metal aluminum plate.

[0008] Furthermore, the thickness of the metal aluminum plate is W1, wherein 0.1 mm≤W1≤1 mm.

[0009] Furthermore, an outer ring of the porous structure is formed by vulcanizing rubber on the outer peripheral side of the inner ring of the porous structure.

[0010] Furthermore, the thickness of the outer ring of the porous structure made of rubber material is W2, wherein 0.1 mm≤W2≤1 mm.

[0011] Furthermore, the plurality of pore structures are distributed in a matrix.

[0012] Furthermore, the outer peripheral side of each pore structure has a plug-in structure and / or a slot structure, and two adjacent pore structures among the multiple pore structures are spliced and connected by plugging and fitting the plug-in structure and the slot structure.

[0013] Furthermore, the cross-section of each pore structure is at least one of circular, polygonal, and elliptical.

[0014] Furthermore, the cross-sectional shapes of the cross sections of each pore structure are consistent, and the cross-sectional areas of the cross sections of each pore structure are equal; or, the cross-sectional shape of the cross section of at least one pore structure among the multiple pore structures is inconsistent with the cross-sectional shapes of the cross sections of the remaining pore structures, and the cross-sectional areas of the cross sections of each pore structure are equal.

[0015] Furthermore, the vibration damping device also includes support columns and vibration damping pads, wherein there are multiple support columns, and the multiple support columns are arranged at intervals on the support beams in the circumferential direction of the support frame; there are multiple vibration damping pads, and the multiple vibration damping pads are arranged one-to-one corresponding to the multiple support columns, and a vibration damping pad is arranged under each support column.

[0016] Furthermore, the longitudinal section of the vibration-damping pad in the axial direction of the support column is concave-convex.

[0017] Further, the vibration-damping pad includes a pad body, a first protrusion structure and a second protrusion structure, wherein at least a portion of the first protrusion structure is protruded on the first surface of the pad body, and there are multiple first protrusion structures, and the multiple first protrusion structures are spaced apart along the extension direction of the pad body; at least a portion of the second protrusion structure is protruded on the second surface of the pad body, and there are multiple second protrusion structures, and the multiple second protrusion structures are spaced apart along the extension direction of the pad body; wherein the second surface is arranged opposite to the first surface, and there is a second protrusion structure between two adjacent first protrusion structures among the multiple first protrusion structures.

[0018] Furthermore, the height of the first end of the first protruding structure protruding from the first surface of the pad body is H1, and the height of the second end of the first protruding structure protruding from the second surface of the pad body is H2, wherein H1>H2; the height of the first end of the second protruding structure protruding from the first surface of the pad body is H3, and the height of the second end of the second protruding structure protruding from the second surface of the pad body is H4, wherein H4>H3, and H1=H4, H2=H3.

[0019] According to another aspect of the present invention, a design method for a vibration damping device is provided, which is used for the above-mentioned vibration damping device. The design method includes the following steps: step S1, measuring the length, width and height dimensions of the installation space where the transformer is located, and determining the installation position of the transformer in the installation space, as well as the distance between the installation position and each inner wall surface of the installation space; step S2, starting the transformer, and measuring the vibration acceleration of the ground above, below, and circumferentially outside the support of the transformer at different preset measurement positions during the operating period and operating conditions when the transformer is under heavy load, determining the position with the maximum impact of the vibration acceleration, and analyzing the vibration impact of the transformer in combination with the working environment of the transformer; step S3, performing Fourier transform on each measured vibration acceleration, and analyzing the frequency spectrum characteristics of the vibration acceleration at each preset measurement position to obtain the maximum impact frequency and attenuation characteristics of the frequency spectrum of the vibration acceleration at each preset measurement position; step S4, judging the working environment of the transformer based on the overall external dimensions, overall weight and vibration noise frequency of the transformer, and determining the overall counterweight of the vibration damping device and the vibration damping structure of the vibration damping device.

[0020] The technical solution of the present invention is applied, by arranging a vibration-damping structure in a supporting frame, wherein the supporting frame supports the transformer and the vibration-damping structure reduces the vibration of the transformer. Furthermore, the vibration-damping structure has multiple pore structures, and each pore structure includes an inner ring and an outer ring, the inner ring is made of metal material, and the outer ring is made of rubber material. In this way, after the transformer is installed on the vibration-damping device, when the transformer vibrates during operation, the outer ring of each pore structure is deformed due to the vibration, further causing the inner ring of each pore structure to be compressed and deformed, thereby consuming the energy of the vibration force generated by the transformer, achieving the purpose of reducing the vibration of the transformer, and helping to prevent the vibration generated by the transformer from seriously affecting the normal life of residents in the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 A schematic structural diagram showing the cooperation between a vibration reduction device and a transformer according to an optional embodiment of the present invention is shown;

[0023] Figure 2 Shown Figure 1 Schematic diagram of the structure of the vibration reduction device;

[0024] Figure 3 Shown Figure 2 A schematic structural diagram of the vibration reduction device from another perspective;

[0025] Figure 4 Shown Figure 3 A schematic diagram of the structure of the vibration reduction device in FIG. 2 , which does not include the top plate;

[0026] Figure 5 Shown Figure 4 A schematic structural diagram of the vibration reduction device from another perspective;

[0027] Figure 6 Shown Figure 5 A schematic structural diagram of the vibration reduction structure of the vibration reduction device;

[0028] Figure 7 Shown Figure 6 A structural diagram of the vibration reduction structure from another perspective;

[0029] Figure 8 Shown Figure 2 A schematic structural diagram of a vibration damping pad of a vibration damping device;

[0030] Figure 9 A schematic flow chart of a design method for a vibration damping device according to an optional embodiment of the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 10. Support frame; 11. Support beam; 12. Top plate; 1. Transformer;

[0033] 20. Vibration reduction structure; 21. Pore structure;

[0034] 30. Support column; 40. Vibration-damping pad; 41. Pad body; 42. First protruding structure; 43. Second protruding structure. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In order to solve the problem in the prior art that transformer vibration reduction effect is insufficient and affects residents' lives, the present invention provides a vibration reduction device and a design method for the vibration reduction device.

[0037] like Figures 1 to 8As shown, the vibration reduction device is used to reduce vibration of the transformer 1. The vibration reduction device includes a support frame 10 and a vibration reduction structure 20, wherein the support frame 10 has a receiving area and is used to support the transformer 1; the vibration reduction structure 20 is arranged in the receiving area, and the vibration reduction structure 20 has a plurality of pore structures 21, each pore structure 21 includes an inner ring and an outer ring, the inner ring is made of metal material, and the outer ring is made of rubber material.

[0038] By applying the technical solution of the present invention, a vibration reduction structure 20 is arranged in the support frame 10, wherein the support frame 10 supports the transformer 1 and the vibration reduction structure 20 reduces the vibration of the transformer 1. Furthermore, the vibration reduction structure 20 has a plurality of pore structures 21, and each pore structure 21 includes an inner ring and an outer ring, the inner ring is made of metal material, and the outer ring is made of rubber material. In this way, after the transformer 1 is installed on the vibration reduction device, when the transformer 1 vibrates during operation, the outer ring of each pore structure 21 is deformed due to the vibration, further causing the inner ring of each pore structure 21 to be compressed and deformed, thereby consuming the energy of the vibration force generated by the transformer 1, achieving the purpose of reducing the vibration of the transformer 1, and helping to prevent the vibration generated by the transformer 1 from seriously affecting the normal life of residents in the surrounding environment.

[0039] It should be noted that, in the present application, the vibration reduction device is a rectangular structure, which is convenient for cooperation with the transformer 1. The vibration reduction device has a top plate 12 and a bottom plate, both of which are made of steel material, and the support frame 10 is connected as a whole by welding technology.

[0040] It should be noted that in the present application, at least one of the multiple pore structures 21 has a filler, and the filler is made of a sound-insulating and / or sound-absorbing material. Thus, the filler made of a sound-insulating and / or sound-absorbing material can isolate or fully absorb the noise generated by the transformer 1, thereby enhancing the vibration reduction effect.

[0041] Preferably, the filler is made of a sound insulation and sound absorption composite material, that is, the filler is a high-damping sound insulation and sound absorption composite material, and the sound absorption and noise reduction coefficient of the filler is above 0.86.

[0042] Preferably, the inner ring of the pore structure 21 is formed by laser cutting and welding of a metal aluminum plate. In this way, the metal aluminum plate is light in weight, which is conducive to the lightweight design of the vibration reduction device and has a good vibration reduction effect.

[0043] It should be noted that in this application, the thickness of the metal aluminum plate is W1, where 0.1 mm ≤ W1 ≤ 1 mm. Thus, by rationally optimizing the thickness W1 of the metal aluminum plate, the inner ring of the pore structure 21 made of the metal aluminum plate can be ensured to have a certain degree of deformation ability while not being damaged.

[0044] Preferably, the outer ring of the pore structure 21 is formed by rubber vulcanization on the outer circumference of the inner ring of the pore structure 21. In this way, the vibration reduction reliability of the vibration reduction device on the transformer 1 is ensured.

[0045] It should be noted that in this application, the thickness of the outer ring of the porous structure 21 made of rubber material is W2, where 0.1mm≤W2≤1mm. Thus, by rationally optimizing the thickness W2 of the outer ring of the porous structure 21 made of rubber material, the vibration damping effect of the vibration damping device is ensured while also ensuring the deformation reliability of the outer ring of the porous structure 21.

[0046] It should be noted that in the present application, the outer periphery of each pore structure 21 has a plug-in structure and / or a slot structure, and two adjacent pore structures 21 among the multiple pore structures 21 are spliced and connected by plugging and fitting the plug-in structure and the slot structure. In this way, the connection reliability between the pore structures 21 is ensured.

[0047] like Figures 4 to 7 As shown, the plurality of pore structures 21 are distributed in a matrix. In this way, the plurality of pore structures 21 are distributed in a matrix periodic manner, and the arrangement is more compact, thereby enhancing the stability of the connection between the pore structures 21.

[0048] It should be noted that in the present application, the vibration-damping structure 20 will deform when subjected to vibration impact, and at the same time can effectively clean the dust on the structure and effectively clean various substances accumulated in the structure, thereby achieving a maintenance-free function.

[0049] Optionally, the cross-section of each pore structure 21 is at least one of a circular, polygonal, and elliptical shape. Thus, each pore structure 21 having a cross-section of at least one of a circular, polygonal, and elliptical shape allows for a vibration damping device to be tailored to suit the transformer 1 based on various factors, such as its specific model, operating status, and location, thereby increasing the diversity of the vibration damping device structure.

[0050] It should be noted that, in the present application, the cross section of the pore structure 21 is circular.

[0051] like Figure 6 As shown, each pore structure 21 is cylindrical. When the vibration generated during the operation of the transformer 1 is transmitted to the interior of the vibration reduction device, each pore structure 21 rotates counterclockwise due to the force of the transverse tangential beam, thereby driving the longitudinal tangential beam to contract / rotate to achieve special deformations of the structure such as compression-torsion, tension-torsion, and negative Poisson's ratio. By changing the number of tangential beams, the shape of each pore structure 21, or replacing the flexible straight tangential beams with curved beams, more chiral superstructure periodic structures can be obtained, thereby effectively absorbing and consuming vibration energy and effectively eliminating vibration and noise in various frequency bands.

[0052] Specifically, when the vibration-damping structure 20 is subjected to horizontal impact vibration, the supporting frames 10 on the outer peripheral sides of all vibration-damping structures 20 will be deformed, and the pore structures 21 of the vibration-damping structure 20 will be subjected to lateral (i.e. horizontal, relative to the vertical) and tangential (i.e. tangential relative to the circle) forces, thereby causing the pore structures 21 to rotate clockwise and counterclockwise, compress and deform, thereby consuming the energy of the horizontal impact vibration force and achieving effective vibration reduction and energy consumption; the flexible straight-cut beam means that the supporting frame 10 can be attached to the supporting beam 11 with a flexible rubber material, and the curved beam means that the supporting beam 11 is adjusted to undergo limited deformation so that a bending force acts on the inside.

[0053] like Figures 4 to 7 As shown, the cross-sectional shapes of the cross sections of each pore structure 21 are consistent, and the cross-sectional areas of each pore structure 21 are equal; or, the cross-sectional shape of the cross section of at least one pore structure 21 among the multiple pore structures 21 is inconsistent with the cross-sectional shapes of the cross sections of the other pore structures 21, and the cross-sectional areas of each pore structure 21 are equal. In this way, the cross-sectional shapes of the cross sections of each pore structure 21 are consistent, and the cross-sectional areas of each pore structure 21 are equal, so that the vibration damping structure 20 has a periodic structure, thereby effectively absorbing and dissipating sound wave and airflow energy.

[0054] It should be noted that in an embodiment not shown in the present application, the cross-sectional shape of the cross section of at least one pore structure 21 among the multiple pore structures 21 is inconsistent with the cross-sectional shapes of the cross sections of the remaining pore structures 21, so that more chiral superstructure periodic structures can be obtained, thereby effectively absorbing and consuming sound waves and airflow energy.

[0055] like Figures 1 to 5 As shown, the vibration reduction device further includes support columns 30 and vibration reduction pads 40. There are multiple support columns 30, which are spaced apart and arranged on the support beams 11 in the circumferential direction of the support frame 10. There are multiple vibration reduction pads 40, which are arranged one-to-one with the multiple support columns 30, with a vibration reduction pad 40 disposed below each support column 30. In this way, the multiple support columns 30 are spaced apart and arranged on the support beams 11 in the circumferential direction of the support frame 10, and a vibration reduction pad 40 is disposed below each support column 30, effectively reducing the transmission of vibration to the transformer 1, thereby effectively blocking the propagation of noise of various frequency bands to the main structure of the building.

[0056] It should be noted that, in the present application, the vibration-damping pad 40 is made of rubber material.

[0057] like Figure 8As shown, the longitudinal section of the vibration-damping pad 40 in the axial direction of the support column 30 is concave-convex. Thus, the concave-convex shape of the vibration-damping pad 40 in the axial direction of the support column 30 increases friction with the ground, making it less likely to move. On the other hand, it reduces contact with the ground, reducing the transmission of vibration noise.

[0058] like Figure 8 As shown, the vibration-damping pad 40 includes a pad body 41, a first protruding structure 42, and a second protruding structure 43, wherein at least a portion of the first protruding structure 42 is protrudingly disposed on the first surface of the pad body 41, and there are multiple first protruding structures 42, and the multiple first protruding structures 42 are spaced apart along the extension direction of the pad body 41; at least a portion of the second protruding structure 43 is protrudingly disposed on the second surface of the pad body 41, and there are multiple second protruding structures 43, and the multiple second protruding structures 43 are spaced apart along the extension direction of the pad body 41; wherein the second surface is disposed opposite to the first surface, and there is a second protruding structure 43 between two adjacent first protruding structures 42 in the multiple first protruding structures 42. In this way, the first protruding structure 42 is disposed on the first surface of the pad body 41 and is connected to the support column 30, and the second protruding structure 43 is disposed on the second surface of the pad body 41 and is in contact with the ground, effectively reducing the propagation of vibration by reducing the contact area.

[0059] It should be noted that in this application, the height at which the first end of the first protruding structure 42 protrudes from the first surface of the cushion body 41 is H1, and the height at which the second end of the first protruding structure 42 protrudes from the second surface of the cushion body 41 is H2, where H1>H2; the height at which the first end of the second protruding structure 43 protrudes from the first surface of the cushion body 41 is H3, and the height at which the second end of the second protruding structure 43 protrudes from the second surface of the cushion body 41 is H4, where H4>H3, and H1=H4, H2=H3. In this way, the above arrangement achieves vertical vibration reduction and partial horizontal vibration reduction.

[0060] It should be noted that in the present application, the vibration-damping pad 40 is a concave-convex block and is arranged on both sides, so that the vibration-damping pad 40 has both a high elastic state and a high viscosity state. The elasticity of rubber is caused by the change in its curled molecular conformation. The interaction between rubber molecules will hinder the movement of the molecular chain and exhibit viscosity characteristics, so that stress and strain are often in an unbalanced state; this curled long-chain molecular structure of rubber and the weaker secondary forces between molecules make the rubber material exhibit unique viscoelastic properties, and thus has good vibration reduction, sound insulation and buffering properties. The elastic structure of the vibration-damping pad effectively blocks the direct rigid connection of the upper structure to the ground, reducing the vibration transmission efficiency.

[0061] like Figure 9As shown, a design method for a vibration reduction device is used for the above-mentioned vibration reduction device, and the design method includes the following steps: step S1, measuring the length, width and height dimensions of the installation space where the transformer 1 is located, and determining the installation position of the transformer 1 in the installation space, as well as the distance between the installation position and the inner wall surfaces of the installation space; step S2, starting the transformer 1, and measuring the vibration acceleration of the ground above the support, below the support, and on the circumferential side of the support of the transformer 1 at different preset measurement positions during the operating period and operating conditions when the transformer 1 is under a large load, determining the position with the largest impact of the vibration acceleration, and analyzing the vibration impact of the transformer 1 in combination with the working environment of the transformer 1; step S3, performing Fourier transform on each measured vibration acceleration, and analyzing the frequency spectrum characteristics of the vibration acceleration at each preset measurement position to obtain the maximum impact frequency and attenuation characteristics of the frequency spectrum of the vibration acceleration at each preset measurement position; step S4, judging the working environment of the transformer 1 based on the overall external dimensions, overall weight and vibration noise frequency of the transformer 1, and determining the overall counterweight of the vibration reduction device and the vibration reduction structure 20 of the vibration reduction device.

[0062] It should be noted that in this application, in step S1, by conducting on-site investigation of transformer 1 equipment, the specific location of transformer 1 body, vibration impact area, working environment and operating period conditions are clarified. In step S2, when transformer 1 is under heavy load and operating conditions, the vibration acceleration of the ground above the support of transformer 1, below the support, and 1m, 2m, 3m, 4m and 5m outside the support are measured respectively. The locations with large vibration acceleration and value are analyzed, and the influence of transformer 1 vibration is analyzed in combination with the working environment conditions. In step S3, the characteristic parameters of transformer 1 body are found, including the transformer The outer dimensions, rated capacity, voltage level, core weight, and auxiliary facility weight of the transformer 1 are determined. In step S4, based on the outer dimensions, overall weight, and vibration noise frequency of the transformer 1, the working environment of the transformer 1 is comprehensively considered. Through recalculation, a specific combination configuration process is designed to determine the overall counterweight of the vibration reduction device, the form and specifications of the internal periodic structural unit, and according to the vibration data, a new high-efficiency vibration reduction device model that matches it is selected while ensuring the compression displacement. The load borne by the vibration reduction device should not exceed the allowable load range of the vibration reduction device. The specifications and combination of the vibration reduction pads 40 ensure that the vibration reduction and isolation efficiency is above 90.0%.

[0063] It should be noted that, in this application, the above-mentioned "by recalculation" means: after the overall design of the vibration reduction device, by comparing with the actual molded structure of the transformer and modal test simulation analysis, confirm that the actual structure and process meet the design parameters of the vibration reduction device, and adjust the combination configuration process of the vibration reduction device according to the modal test simulation results. At the same time, considering the deformation and material property changes of the material under conditions such as insulating oil immersion, high temperature, and load, the vibration reduction structure is optimized and combined with the various components of the transformer to ensure that the vibration reduction device can effectively meet actual needs.

[0064] It should be noted that in this application, after the vibration reduction device is manufactured, the stability of the installation and the noise reduction effect of the vibration reduction device need to be tested.

[0065] It should be noted that in this application, through the above-mentioned design method of the vibration damping device, the vibration damping device can be mass-produced and can also be designed as a finished product based on individual needs to meet various requirements. In addition, the vibration damping device occupies less space and is easy to debug and install, which solves the problems of low vibration damping efficiency and single vibration damping form of the traditional vibration damping pedestal, thereby ensuring the stability and durability of the entire transformer system.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0070] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0071] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A vibration damping device, characterized in that: Used for reducing vibration of a transformer (1), the vibration reduction device comprises: A support frame (10), the support frame (10) having a receiving area, the support frame (10) being used to support the transformer (1); A vibration damping structure (20), the vibration damping structure (20) being arranged in the accommodating area, the vibration damping structure (20) having a plurality of pore structures (21), each of the pore structures (21) comprising an inner ring and an outer ring, the inner ring being made of a metal material, and the outer ring being made of a rubber material; At least one of the plurality of pore structures (21) has a filler therein, and the filler is made of a sound-insulating and / or sound-absorbing material; The inner ring of the pore structure (21) is formed by laser cutting and welding of a metal aluminum plate; The thickness of the metal aluminum plate is W1, wherein 0.1 mm ≤ W1 ≤ 1 mm; Forming an outer ring of the pore structure (21) by rubber vulcanization on the outer peripheral side of the inner ring of the pore structure (21); The outer ring of the pore structure (21) made of rubber material has a thickness of W2, wherein 0.1 mm ≤ W2 ≤ 1 mm; The outer peripheral side of each of the pore structures (21) has a plug-in structure and / or a slot structure, and two adjacent pore structures (21) in the plurality of pore structures (21) are spliced and connected through the plug-in fit of the plug-in structure and the slot structure.

2. The vibration damping device according to claim 1, characterized in that: The filler is made of a sound insulation and sound absorption composite material, and the sound absorption and noise reduction coefficient of the filler is above 0.

86.

3. The vibration damping device according to claim 1 or 2, characterized in that: The plurality of pore structures (21) are distributed in a matrix.

4. The vibration damping device according to claim 1 or 2, characterized in that: The cross section of each of the pore structures (21) is at least one of circular, polygonal, and elliptical.

5. The vibration damping device according to claim 1 or 2, characterized in that: The cross-sectional shapes of the cross sections of the pore structures (21) are all consistent, and the cross-sectional areas of the cross sections of the pore structures (21) are all equal; or, The cross-sectional shape of at least one of the plurality of pore structures (21) is inconsistent with the cross-sectional shapes of the cross-sectional shapes of the remaining pore structures (21), and the cross-sectional areas of the cross-sectional areas of the respective pore structures (21) are equal.

6. The vibration damping device according to claim 1 or 2, characterized in that: The vibration reduction device further comprises: Support columns (30), the support columns (30) being multiple, and the multiple support columns (30) being arranged at intervals on the support beam (11) in the circumferential direction of the support frame (10); A vibration-damping pad (40) is provided. The vibration-damping pad (40) is provided in a plurality, and the plurality of vibration-damping pads (40) are provided in a one-to-one correspondence with the plurality of support columns (30). A vibration-damping pad (40) is provided below each support column (30).

7. The vibration damping device according to claim 6, characterized in that: The longitudinal section of the vibration-damping pad (40) in the axial direction of the support column (30) is concave-convex.

8. The vibration damping device according to claim 6, characterized in that: The vibration-damping pad (40) comprises: Pad body (41); a first protruding structure (42), at least a portion of the first protruding structure (42) being protrudingly disposed on the first surface of the pad body (41), and a plurality of the first protruding structures (42), the plurality of the first protruding structures (42) being spaced apart along an extension direction of the pad body (41); a second protruding structure (43), at least a portion of the second protruding structure (43) being protrudingly disposed on the second surface of the cushion block body (41), and a plurality of the second protruding structures (43), the plurality of the second protruding structures (43) being spaced apart along the extension direction of the cushion block body (41); The second surface is arranged opposite to the first surface, and one second convex structure (43) is provided between two adjacent first convex structures (42) among the plurality of first convex structures (42).

9. The vibration damping device according to claim 8, characterized in that: The height of the first end of the first protruding structure (42) protruding from the first surface of the pad body (41) is H1, and the height of the second end of the first protruding structure (42) protruding from the second surface of the pad body (41) is H2, wherein H1>H2; The height at which the first end of the second protruding structure (43) protrudes from the first surface of the pad body (41) is H3, and the height at which the second end of the second protruding structure (43) protrudes from the second surface of the pad body (41) is H4, wherein H4>H3, H1=H4, and H2=H3.

10. A design method for a vibration damping device, characterized in that: For the vibration damping device according to any one of claims 1 to 9, the design method comprises the following steps: Step S1, measuring the length, width and height of the installation space where the transformer (1) is located, and determining the installation position of the transformer (1) in the installation space, and the distance between the installation position and each inner wall surface of the installation space; Step S2, starting the transformer (1), and measuring the vibration acceleration of the ground at different preset measurement positions above the support, below the support, and on the circumferential side of the support of the transformer (1) during an operating period and operating condition when the transformer (1) is under a relatively large load, determining the position of influence of the maximum vibration acceleration, and analyzing the vibration influence of the transformer (1) in combination with the working environment of the transformer (1); Step S3, performing Fourier transform on each of the measured vibration accelerations, and analyzing the spectrum characteristics of the vibration acceleration at each of the preset measurement positions to obtain the maximum impact frequency and attenuation characteristics of the spectrum of the vibration acceleration at each of the preset measurement positions; Step S4, judging the working environment of the transformer (1) based on the overall dimensions, overall weight and vibration noise frequency of the transformer (1), and determining the overall counterweight of the vibration reduction device and the vibration reduction structure (20) of the vibration reduction device.

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