Anti-vibration pad and transformer
A hybrid active power factor correction circuit with a boost converter and passive filter, integrated with a modular multilevel converter, addresses inefficiencies in VFDs by optimizing power factor correction and harmonic mitigation in high-power applications.
Patent Information
- Application Number
- CN202422181371.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The existing transformer products are noisy and are mainly caused by vibration, and the existing rubber pads have poor vibration damping effect.
The vibration damping pad with a three-layer structure includes a first rubber vibration damping layer, a laminated wooden layer and a second rubber vibration damping layer, which are respectively arranged between the foot pad of the transformer body and the oil tank, and vibration transmission is reduced through two vibration damping processes.
It effectively improves vibration damping effect and reduces the internal noise of the transformer. It has a simple structure and low cost, and does not increase the product footprint.
Smart Images
Figure CN223108619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a vibration damping pad and a transformer. Background Art
[0002] In recent years, due to the vigorous development of the country's new energy industry, the country's demand for transformers and other products is also huge. However, most of the existing transformer products have the problem of high noise. Most of the noise of transformers and other products is caused by vibration. In addition, there is also magnetic flux vibration in the magnetic circuit of the transformer product, and mechanical vibration generated by the operation of the transformer product structure itself. With the development of society, people's standards for their own health and safety are constantly improving, and the market's requirements for the noise of transformers and other products are also increasing.
[0003] Since transformer products will generate vibration during operation, vibration will produce sound, but generally speaking, the vibration caused by the electromagnetic force between the joints of silicon steel sheets and the stacking sheets is much smaller than other vibrations of the product. This means that the noise of products such as transformers comes from the vibration of the equipment itself, and the vibration of the equipment itself basically depends on the vibration of the iron core. This vibration is transmitted to the oil tank through the pads and insulating oil, and the vibration of the oil tank wall produces the body noise.
[0004] In order to reduce the vibration of transformer products, vibration reduction materials can be added during the vibration transmission process to achieve vibration reduction, such as laying rubber pads or installing sound insulation panels on the box walls. Using rubber to reduce the vibration of the transformer and thus reduce noise is a relatively economical and practical noise reduction method. However, the vibration reduction effect of laying rubber pads alone is not good, and noise is still generated.
[0005] Therefore, how to use rubber to reduce vibration and improve the effect of rubber vibration reduction is a problem that needs to be solved urgently. Utility Model Content
[0006] The main purpose of the utility model is to provide a vibration reduction pad and a transformer, aiming to solve the problem of how to use rubber for vibration reduction and how to improve the effect of rubber vibration reduction.
[0007] To achieve the above-mentioned purpose, the utility model proposes a vibration-damping pad, which includes a first rubber vibration-damping layer, a second rubber vibration-damping layer and a connecting layer, the connecting layer includes a laminated wood layer, the first rubber vibration-damping layer and the second rubber vibration-damping layer are respectively arranged on both sides of the laminated wood layer, the side of the first rubber vibration-damping layer away from the laminated wood layer is used to abut against the pad foot of the transformer body, and the side of the second rubber vibration-damping layer away from the laminated wood layer is used to abut against the oil tank.
[0008] In one embodiment, the first rubber damping layer includes first rubber blocks, the second rubber damping layer includes second rubber blocks, the first rubber blocks and the second rubber blocks are respectively disposed on both sides of the laminated wood layer, one side of the first rubber block facing away from the laminated wood layer abuts against the foot pad, and one side of the second rubber block facing away from the laminated wood layer is for abutting against the fuel tank.
[0009] In one embodiment, the area where the first rubber block contacts the foot pad is the abutting area, and the area of the abutting area is not greater than the area of one side of the first rubber block facing away from the laminated wood layer.
[0010] In one embodiment, the number of the first rubber blocks is at least two, and at least two of the first rubber blocks are spaced apart;
[0011] And / or,
[0012] The number of the second rubber blocks is at least two, and at least two of the second rubber blocks are spaced apart.
[0013] In one embodiment, the number of the first rubber blocks is at least two, at least two of the first rubber blocks are spaced apart, the number of the second rubber blocks is the same as that of the first rubber blocks and they are arranged in one-to-one correspondence.
[0014] In one embodiment, the ballast of the first rubber damping layer is 75% - 80% of the mass of the transformer body.
[0015] In one embodiment, the area of one side of the first rubber damping layer facing away from the laminated wood layer does not exceed the bottom area of the foot pad.
[0016] In one embodiment, the thickness of the first rubber damping layer is not less than 10 mm;
[0017] And / or,
[0018] The thickness of the second rubber damping layer is not less than 10 mm.
[0019] In one embodiment, the hardness of the first rubber damping layer is not less than Shore hardness 60A;
[0020] And / or,
[0021] The hardness of the second rubber damping layer is not less than Shore hardness 60A.
[0022] In addition, the present utility model also provides a transformer, the transformer includes a transformer body, a fuel tank and a damping pad as described in any of the above technical solutions, the bottom of the transformer body is provided with the foot pads, the number of the foot pads is at least two, and the number of the damping pads does not exceed the number of the foot pads.
[0023] In the embodiment of the present utility model, vibration reduction is achieved by adding vibration damping pads during the transmission of vibration. The vibration damping pads are arranged between the feet of the transformer body and the oil tank. The vibration damping pads are successively a first rubber vibration damping layer, a laminated wood layer, and a second rubber vibration damping layer from top to bottom. The vibration on the feet is first damped by the first rubber vibration damping layer and then transmitted to the laminated wood layer, and further damped by the second rubber vibration damping layer and then transmitted to the oil tank. Two-stage vibration damping is achieved during the vibration transmission process, effectively improving the vibration damping effect; the first rubber vibration damping layer and the second rubber vibration damping layer have excellent elastic deformation and energy absorption characteristics, which can well reduce the transmission of vibration. The intermediate laminated wood layer can improve the overall stability and impact resistance of the vibration damping pad, ensure the stability of the overall structure of transformer products while reducing vibration and noise, reduce the internal shaking of transformer products, and thus reduce the internal noise of transformer products; compared with the existing vibration damping structure with rubber on the upper layer and laminated wood on the lower layer, when the vibration of transformer products is transmitted to the laminated wood, due to the hard contact between the laminated wood and the oil tank, significant frictional vibration will occur. However, in this vibration damping pad, a second rubber vibration damping layer is added at the bottom of the laminated wood layer. The vibration of the laminated wood layer will first further reduce the vibration intensity through the second rubber vibration damping layer at the bottom, effectively improving the vibration damping effect. At the same time, the frictional vibration between the second rubber vibration damping layer and the oil tank is smaller than that between the laminated wood layer and the oil tank, which can effectively reduce noise. In the embodiment of the present utility model, by arranging vibration damping pads between the feet of the transformer body and the oil tank, the vibration damping effect is improved through two-stage vibration damping during the vibration transmission process. The structure of the vibration damping pad is simple. During use, only the three-layer structure needs to be laid step by step from bottom to top, and the operation process is simple. It can also ensure that the floor area occupied by transformer products will not increase, and the mass of the vibration damping pad is small, which will not cause load redundancy for transformer products. The vibration damping pad is mainly made of rubber material, with low investment cost and good reliability. Compared with the vibration damping structure with rubber on the upper layer and laminated wood on the lower layer, the vibration damping effect of this vibration damping pad is better, and noise can be effectively reduced. Description of the Drawings
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0025] Figure 1 It is a schematic structural diagram of an embodiment of the vibration damping pad of the present utility model;
[0026] Figure 2 It is a side view of an embodiment of the vibration damping pad of the present utility model;
[0027] Figure 3 This is a top view of an embodiment of the shock-absorbing pad of the present utility model.
[0028] Explanation of the reference numerals in the attached drawings:
[0029] 100, shock-absorbing pad; 1, first rubber shock-absorbing layer; 11, first rubber block; 111, abutting area; 2, second rubber shock-absorbing layer; 21, second rubber block; 3, connecting layer; 31, laminated wood layer;
[0030] 200, pad foot.
[0031] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the attached drawings. Specific embodiments
[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0035] In recent years, due to the vigorous development of the country's new energy industry, the country's demand for transformers and other products is also huge. However, most of the existing transformer products have the problem of high noise. Most of the noise of transformers and other products is caused by vibration. In addition, there is also magnetic flux vibration in the magnetic circuit of the transformer product, and mechanical vibration generated by the operation of the transformer product structure itself. With the development of society, people's standards for their own health and safety are constantly improving, and the market's requirements for the noise of transformers and other products are also increasing.
[0036] Since transformer products will generate vibration during operation, vibration will produce sound, but generally speaking, the vibration caused by the electromagnetic force between the joints of silicon steel sheets and the stacking sheets is much smaller than other vibrations of the product. This means that the noise of products such as transformers comes from the vibration of the equipment itself, and the vibration of the equipment itself basically depends on the vibration of the iron core. This vibration is transmitted to the oil tank through the pads and insulating oil, and the vibration of the oil tank wall produces the body noise.
[0037] In order to reduce the vibration of transformer products, vibration reduction materials can be added during the vibration transmission process to achieve vibration reduction, such as laying rubber pads or installing sound insulation panels on the box walls. Using rubber to reduce the vibration of the transformer and thus reduce noise is a relatively economical and practical noise reduction method. However, the vibration reduction effect of laying rubber pads alone is not good, and noise is still generated.
[0038] The main purpose of the utility model is to provide a vibration reduction pad and a transformer, aiming to solve the problem of how to use rubber for vibration reduction and how to improve the effect of rubber vibration reduction.
[0039] See also Figures 1 to 3 In one embodiment of the utility model, the vibration damping pad 100 includes a first rubber vibration damping layer 1, a second rubber vibration damping layer 2 and a connecting layer 3, the connecting layer 3 includes a laminated wood layer 31, the first rubber vibration damping layer 1 and the second rubber vibration damping layer 2 are respectively arranged on both sides of the laminated wood layer 31, the side of the first rubber vibration damping layer 1 away from the laminated wood layer 31 is used to abut against the pad 200 of the transformer body, and the side of the second rubber vibration damping layer 2 away from the laminated wood layer 31 is used to abut against the oil tank.
[0040] In the embodiment of the present utility model, vibration reduction is achieved by adding a vibration damping pad 100 during the transmission of vibration. The vibration damping pad 100 is arranged between the foot pads 200 of the transformer body and the fuel tank. The vibration damping pad 100 includes a first rubber vibration damping layer 1, a laminated wood layer 31, and a second rubber vibration damping layer 2 from top to bottom. The vibration on the foot pads 200 is first damped by the first rubber vibration damping layer 1 and then transmitted to the laminated wood layer 31, and further damped by the second rubber vibration damping layer 2 before being transmitted to the fuel tank. Two-stage vibration damping is achieved during the vibration transmission process, effectively improving the vibration damping effect. The first rubber vibration damping layer 1 and the second rubber vibration damping layer 2 have excellent elastic deformation and energy absorption characteristics, which can well reduce the transmission of vibration. The intermediate laminated wood layer 31 can improve the overall stability and impact resistance of the vibration damping pad 100, ensure the stability of the overall structure of transformer products while reducing vibration and noise, reduce the internal shaking of transformer products, and thus reduce the internal noise of transformer products. Compared with the existing vibration damping structure with rubber on the upper layer and laminated wood on the lower layer, when the vibration of transformer products is transmitted to the laminated wood, due to the hard contact between the laminated wood and the fuel tank, significant frictional vibration will occur. However, in this vibration damping pad 100, a second rubber vibration damping layer 2 is added at the bottom of the laminated wood layer 31. The vibration of the laminated wood layer 31 will first pass through the second rubber vibration damping layer 2 at the bottom to further reduce the vibration intensity, effectively improving the vibration damping effect. At the same time, the frictional vibration between the second rubber vibration damping layer 2 and the fuel tank is smaller than that between the laminated wood layer 31 and the fuel tank, which can effectively reduce noise.
[0041] The technical solution of the present utility model improves the vibration damping effect by setting a vibration damping pad 100 between the foot pads 200 and the fuel tank and achieving two-stage vibration damping during the vibration transmission process. The structure of the vibration damping pad 100 is simple. During use, only the three-layer structure needs to be laid step by step from bottom to top, and the operation process is simple. It can also ensure that the floor area of transformer products will not increase. Moreover, the vibration damping pad 100 has a small mass and will not cause load redundancy of transformer products. The vibration damping pad 100 is mainly made of rubber material, with low investment cost and good reliability. Compared with the vibration damping structure with rubber on the upper layer and laminated wood on the lower layer, the vibration damping pad 100 has a better vibration damping effect and can effectively reduce noise.
[0042] In this embodiment, the specific thickness of the laminated wood layer 31 is not limited. Preferably, in order to ensure that the laminated wood layer 31 has excellent impact resistance and anti-deformation ability and can ensure the stability and safety of the vibration damping pad 100 during use, the thickness of the laminated wood layer 31 in this embodiment is 10 mm.
[0043] In one embodiment, the first rubber damping layer 1 includes first rubber blocks 11, and the second rubber damping layer 2 includes second rubber blocks 21. The first rubber blocks 11 and the second rubber blocks 21 are respectively disposed on both sides of the laminated wood layer 31. One side of the first rubber block 11 facing away from the laminated wood layer 31 abuts against the foot pad 200, and one side of the second rubber block 21 facing away from the laminated wood layer 31 is used to abut against the fuel tank. Specifically, compared with other structures, the method of using the first rubber blocks 11 and the second rubber blocks 21 to reduce the vibration of transformer products and thus reduce noise is a relatively economical and practical noise reduction method. Rubber is inexpensive, which can effectively reduce the investment cost, and rubber has excellent elastic deformation and energy absorption characteristics, and can absorb and disperse vibration energy by compressing or stretching, thereby reducing the vibration amplitude of the transformer.
[0044] In one embodiment, the area where the first rubber block 11 contacts the foot pad 200 is the abutting area 111, and the area of the abutting area 111 is not larger than the area of one side of the first rubber block 11 facing away from the laminated wood layer 31. Specifically, in this embodiment, the area of the abutting area 111 is equal to the area of one side of the first rubber block 11 facing away from the laminated wood layer 31. At this time, one side of the first rubber block 11 facing away from the laminated wood layer 31 is completely in contact with the foot pad 200 of the transformer, and the first rubber block 11 can be fully used for vibration damping, so that the utilization rate of the first rubber block 11 reaches the maximum in the case of the smallest area, and the investment cost can be effectively reduced.
[0045] According to an embodiment of the present invention, the area of the abutting area 111 is smaller than the area of one side of the first rubber block 11 facing away from the laminated wood layer 31. At this time, a part of the structure on one side of the first rubber block 11 facing away from the laminated wood layer 31 abuts against the foot pad 200 of the transformer, and a part of the structure of the first rubber block 11 is used for vibration damping.
[0046] In one embodiment, the number of the first rubber blocks 11 is at least two, and at least two first rubber blocks 11 are arranged at intervals; and / or, the number of the second rubber blocks 21 is at least two, and at least two second rubber blocks 21 are arranged at intervals. Specifically, when the mass of the transformer body is too heavy and the area of the first rubber blocks 11 and the second rubber blocks 21 is too large to meet the vibration damping requirements, for the convenience of production, manufacturing and transportation, the number of both the first rubber blocks 11 and the second rubber blocks 21 is at least two, and the total areas of at least two first rubber blocks 11 and at least two second rubber blocks 21 can meet the vibration damping requirements. The specific number of the first rubber blocks 11 and the second rubber blocks 21 can be adjusted accordingly according to the mass of the transformer body, without cutting out the first rubber blocks 11 and the second rubber blocks 21 with corresponding areas each time, effectively improving the versatility of the vibration damping pad 100.
[0047] According to an embodiment of the utility model, the number of the first rubber block 11 is one, the number of the second rubber block 21 is at least two, and the at least two second rubber blocks 21 are arranged at intervals. The area of the first rubber block 11 and the total area of the at least two second rubber blocks 21 can meet the vibration reduction requirements, and the area size of the first rubber block 11 and the specific number of the second rubber blocks 21 can be adjusted accordingly according to the mass of the transformer body.
[0048] According to another embodiment of the utility model, the number of the first rubber blocks 11 is at least two, and the at least two first rubber blocks 11 are arranged at intervals. The number of the second rubber block 21 is one, and the total area of the at least two first rubber blocks 11 and the area of the second rubber block 21 can meet the vibration reduction requirements, and the specific number of the first rubber blocks 11 and the area of the second rubber block 21 can be adjusted accordingly according to the mass of the transformer body.
[0049] In one embodiment, the number of the first rubber blocks 11 is at least two, and at least two first rubber blocks 11 are arranged at intervals, and the number of the second rubber blocks 21 is consistent with the number of the first rubber blocks 11 and is arranged one-to-one; specifically, the number of the first rubber blocks 11 and the second rubber blocks 21 are consistent and can be adjusted accordingly according to the mass of the transformer body, and the number of the first rubber blocks 11 and the number of the second rubber blocks 21 are arranged one-to-one, which can ensure the structural stability of the vibration damping pad 100, thereby improving the vibration reduction capability.
[0050] In this embodiment, for the convenience of manufacturing, the shapes of the first rubber block 11 and the second rubber block 21 can be circular, angular or rectangular. This embodiment does not limit the specific shapes of the first rubber block 11 and the second rubber block 21.
[0051] In one embodiment, the ballast of the first rubber vibration-damping layer 1 is 75% to 80% of the mass of the transformer body; specifically, it can ensure that the first rubber vibration-damping layer 1 can maintain good elasticity and deformation ability when subjected to pressure, thereby effectively absorbing and dispersing the force, reducing the vibration of transformer products, and also ensure that the vibration-damping pad 100 maintains stable performance during long-term use, thereby extending the service life and improving safety. Preferably, the ballast of the first rubber vibration-damping layer 1 is 80% of the mass of the transformer body.
[0052] In one embodiment, the area of the first rubber vibration damping layer 1 on the side away from the laminated wood layer 31 does not exceed the area of the bottom surface of the foot 200; specifically, under the condition of meeting the ballast design, the area of the first rubber vibration damping layer 1 on the side away from the laminated wood layer 31 is equal to or less than the area of the bottom surface of the foot 200, which can not only provide a stable anti-vibration effect for transformer products, but also reduce investment costs, ensure that the floor space of transformer products will not increase, and the first rubber vibration damping layer 1 is light in weight and will not cause load redundancy of transformer products.
[0053] In one embodiment, the thickness of the first rubber damping layer 1 is not less than 10 mm; and / or, the thickness of the second rubber damping layer 2 is not less than 10 mm; specifically, to ensure that the first rubber damping layer 1 and the second rubber damping layer 2 have appropriate elastic moduli and can maintain good elasticity and deformation ability when under pressure, the thicknesses of both the first rubber damping layer 1 and the second rubber damping layer 2 are not less than 10 mm. In this embodiment, the thicknesses of both the first rubber damping layer 1 and the second rubber damping layer 2 are 20 mm.
[0054] According to an embodiment of the present invention, the thickness of the first rubber damping layer 1 is not less than 10 mm, and the thickness of the second rubber damping layer 2 is not limited.
[0055] According to another embodiment of the present invention, the thickness of the second rubber damping layer 2 is not less than 10 mm, and the thickness of the first rubber damping layer 1 is not limited.
[0056] In one embodiment, the hardness of the first rubber damping layer 1 is not less than Shore hardness 60A; and / or, the hardness of the second rubber damping layer 2 is not less than Shore hardness 60A; specifically, in this embodiment, to ensure that the first rubber damping layer 1 and the second rubber damping layer 2 have good wear resistance, extrusion resistance, and flexibility in various application environments, the hardnesses of both the first rubber damping layer 1 and the second rubber damping layer 2 are not less than Shore hardness 60A.
[0057] According to an embodiment of the present invention, the hardness of the first rubber damping layer 1 is not less than Shore hardness 60A, and the hardness of the second rubber damping layer 2 is not limited.
[0058] According to another embodiment of the present invention, the hardness of the second rubber damping layer 2 is not less than Shore hardness 60A, and the hardness of the first rubber damping layer 1 is not limited.
[0059] In this embodiment, before installing the damping pad 100, it is necessary to ensure the flatness and cleanliness of the damping pad 100 to reduce ash and debris; when laying the damping pad 100 on the fuel tank, it is necessary to consider both the position of the fuel tank and the position of the pad feet 200 and other structures on the transformer body, and plan the installation position of the damping pad 100 at the fuel tank in advance, and lay the damping pad 100 at an appropriate position to abut against the fuel tank and the pad feet 200, so as to reduce the generation of resonance effects; after the damping pad 100 is installed, the damping pad 100 can be immersed in oil together with the transformer body or the reactor as a whole, so as to reduce the contact of the damping pad 100 with external air, prevent oxidation of the first rubber damping layer 1 and the second rubber damping layer 2, and improve the service life of the damping pad 100.
[0060] The present utility model also provides a transformer, which includes a transformer body, an oil tank, and a vibration damping pad 100. The specific structure of the vibration damping pad 100 refers to the above embodiments. Since this transformer adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the bottom of the transformer body is provided with feet 200, and the number of feet 200 is at least two. The number of vibration damping pads 100 does not exceed the number of feet 200. Specifically, the feet 200 are used to bear the mass of the transformer body. In this embodiment, the number of vibration damping pads 100 is the same as and corresponds to the number of feet 200 one by one. By providing a vibration damping pad 100 between each foot 200 and the oil tank, vibration damping for each foot 200 is achieved.
[0061] According to an embodiment of the present utility model, when ensuring the overall structural stability of the transformer, the number of vibration damping pads 100 can be less than the number of feet 200, so as to perform vibration damping on some of the feet 200.
[0062] In addition, the vibration damping pad 100 can also be arranged between the feet 200 of the reactor and the oil tank. By performing vibration damping on the feet 200 of the reactor, vibration reduction and noise reduction of the reactor are achieved.
[0063] The above is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A vibration damping pad, characterized in that, The vibration damping pad includes a first rubber vibration damping layer, a second rubber vibration damping layer and a connecting layer, the connecting layer includes a laminated wood layer, the first rubber vibration damping layer and the second rubber vibration damping layer are respectively arranged on both sides of the laminated wood layer, the side of the first rubber vibration damping layer away from the laminated wood layer is used to abut against the pad foot of the transformer body, and the side of the second rubber vibration damping layer away from the laminated wood layer is used to abut against the oil tank.
2. The vibration damping pad according to claim 1, characterized in that, The first rubber vibration damping layer includes a first rubber block, and the second rubber vibration damping layer includes a second rubber block. The first rubber block and the second rubber block are respectively arranged on both sides of the laminated wood layer. The side of the first rubber block facing away from the laminated wood layer abuts against the pad, and the side of the second rubber block facing away from the laminated wood layer is used to abut against the fuel tank.
3. The damping pad according to claim 2, wherein, The area where the first rubber block contacts the pad is a contact area, and the area of the contact area is not larger than the area of the side of the first rubber block facing away from the laminated wood layer.
4. The shock-absorbing pad according to claim 2, wherein, The number of the first rubber blocks is at least two, and the at least two first rubber blocks are arranged at intervals; and / or, The number of the second rubber blocks is at least two, and the at least two second rubber blocks are arranged at intervals.
5. The vibration damping pad according to claim 2, wherein The number of the first rubber blocks is at least two, and the at least two first rubber blocks are arranged at intervals. The number of the second rubber blocks is consistent with the number of the first rubber blocks and is arranged in a one-to-one correspondence.
6. The vibration damping pad according to any one of claims 1 to 5, characterized in that, The pressure load of the first rubber vibration-damping layer is 75% to 80% of the mass of the transformer body.
7. The vibration damping pad according to any one of claims 1 to 5, characterized in that, The area of the first rubber vibration-damping layer on a side facing away from the laminated wood layer does not exceed the area of the bottom surface of the pad.
8. The vibration damping pad according to any one of claims 1 to 5, characterized in that The thickness of the first rubber vibration damping layer is not less than 10 mm; and / or, The thickness of the second rubber vibration damping layer is not less than 10 mm.
9. The vibration damping pad according to any one of claims 1 to 5, characterized in that, The hardness of the first rubber vibration damping layer is not less than Shore hardness 60A; and / or, The hardness of the second rubber vibration damping layer is not less than 60A on the Shore A scale.
10. A transformer, characterized in that, The transformer comprises a transformer body, an oil tank and the vibration-damping pads as claimed in any one of claims 1 to 9, the bottom of the transformer body is provided with the pads, the number of the pads is at least two, and the number of the vibration-damping pads does not exceed the number of the pads.