A vibration damping and noise reduction structure for oil-immersed transformers

Abstract

This utility model discloses a vibration damping and noise reduction structure for an oil-immersed transformer, including multiple vibration damping pads disposed between the transformer base and the base plate, an upper pad groove adapted to the vibration damping pads on the bottom surface of the transformer base, a lower pad groove adapted to the vibration damping pads on the top surface of the base plate, and a locking structure disposed between the vibration damping pads and the lower pad grooves; and a vibration damping sleeve detachably installed inside the positioning hole. This application effectively ensures the stability of the vibration damping pads placed in the pad grooves by designing adapted pad grooves on the base and the base plate, and by setting a locking structure between the base plate pad grooves and the vibration damping pads, thus avoiding unnecessary vertical displacement and detachment of the vibration damping pads during transformer assembly, greatly improving the convenience of installation and the stability of subsequent use. Simultaneously, by designing a vibration damping sleeve inside the positioning hole, direct contact between the positioning studs and the inner wall of the positioning hole is effectively blocked, further increasing the vibration damping and noise reduction effect and reducing vibration and noise during transformer operation.

Description

Technical Field

[0001] This utility model belongs to the field of transformer installation technology, specifically relating to a vibration reduction and noise reduction structure for oil-immersed transformers. Background Technology

[0002] As a key piece of electrical equipment in the power system, oil-immersed transformers undertake important tasks such as voltage transformation, power distribution, and transmission. Their operational stability is directly related to the safety and reliability of the entire power system. However, during operation, oil-immersed transformers generate significant vibrations and noise due to the magnetostriction of the internal iron core, the electromagnetic force of the windings, and the operation of components such as cooling fans. These vibrations and noises not only pollute the surrounding environment and affect the normal life and work of residents, but may also accelerate the fatigue damage of internal components, reduce the service life of the transformer, and even affect the performance and operational safety of the transformer. In order to reduce the vibration and noise of oil-immersed transformers and improve their operational stability, the industry usually adopts vibration reduction and noise reduction structures.

[0003] Currently, common vibration damping and noise reduction structures for oil-immersed transformers are mainly installed at the bottom of the transformer. This typically involves placing multiple damping pads between the base and the bottom plate to achieve vibration damping and noise reduction. In this traditional structure, the damping pads are placed directly on the bottom plate. To prevent horizontal displacement of the damping pads, horizontal restraints are designed around them. However, this traditional structure has significant drawbacks: On the one hand, in the vertical direction, due to the lack of effective limiting measures, the shock-absorbing pads are prone to displacement in the vertical direction during the actual installation and assembly process. This displacement will hinder the assembly work and cause the shock-absorbing pads to fall off unnecessarily during the transformer assembly process, increasing the difficulty and time cost of assembly and reducing assembly efficiency. On the other hand, the traditional structure does not have a vibration damping structure designed between the positioning stud and the positioning hole. The positioning stud is in direct contact with the inner wall of the positioning hole. During the operation of the transformer, this direct contact will lead to more direct vibration transmission, which will easily generate vibration noise and further affect the vibration damping and noise reduction effect and installation stability of the transformer. Therefore, this utility model proposes a vibration reduction and noise reduction structure for oil-immersed transformers. Utility Model Content

[0004] The purpose of this invention is to provide a vibration damping and noise reduction structure for oil-immersed transformers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration damping and noise reduction structure for oil-immersed transformers, comprising... Multiple shock-absorbing pads are set between the transformer base and the base plate; an upper pad groove is opened on the bottom surface of the transformer base to match the shock-absorbing pads; a lower pad groove is opened on the top surface of the base plate to match the shock-absorbing pads; and a locking structure is set between the shock-absorbing pads and the lower pad groove. Two positioning studs fixed to the top surface of the base plate, positioning holes opened on the surface of the transformer base for the positioning studs to pass through, and a shock-absorbing sleeve that can be detachably installed inside the positioning hole.

[0006] Preferably, the locking structure includes two L-shaped locking strips disposed inside the lower pad groove and two L-shaped locking slots formed on the bottom surface of the shock-absorbing pad for the L-shaped locking strips to be inserted.

[0007] Preferably, both the L-shaped card strip and the L-shaped card slot have an L-shaped cross-section.

[0008] Preferably, the inner diameter of the shock-absorbing sleeve matches the outer diameter of the positioning stud.

[0009] Preferably, the bottom end of the shock-absorbing sleeve is engaged and installed on the bottom surface of the transformer base.

[0010] Preferably, the bottom surface of the shock-absorbing sleeve is provided with multiple integrated T-shaped clips, and the bottom surface of the transformer base is provided with annular grooves for the T-shaped clips to be inserted relative to the outer side of each positioning hole.

[0011] Preferably, the top of the T-shaped card head has two strip-shaped deformation notches, and the cross-section of the strip-shaped deformation notches is rectangular.

[0012] Preferably, it also includes two locking nuts symmetrically arranged on the top of the transformer base, and the top end of the positioning stud extends through to the top of the transformer base and is threadedly connected to the locking nuts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The vibration reduction and noise reduction structure for oil-immersed transformers proposed in this application, by designing matching grooves on the base and bottom plate, and setting a locking structure between the bottom plate grooves and the vibration-damping pads, effectively ensures the stability of the vibration-damping pads placed in the grooves, avoiding unnecessary vertical displacement and detachment of the vibration-damping pads during transformer assembly, greatly improving the convenience of installation and the stability of subsequent use; at the same time, by designing vibration-damping sleeves in the positioning holes, the direct contact between the positioning studs and the inner wall of the positioning holes is effectively blocked, further increasing the vibration reduction and noise reduction effect, reducing vibration and noise during transformer operation, improving the overall installation stability and operational reliability of the transformer, and providing a strong guarantee for the safe and stable operation of oil-immersed transformers. Attached Figure Description

[0014] Figure 1 This is an exploded view of the present invention; Figure 2This is an exploded view of the present invention from below; Figure 3 This is an exploded cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the structure of the shock-absorbing sleeve of this utility model; Figure 5 This utility model Figure 3 A magnified view of a portion of region A in the middle; In the diagram: 1. Transformer base; 11. Positioning hole; 12. Upper pad groove; 13. Annular slot; 2. Base plate; 21. Lower pad groove; 22. L-shaped retaining strip; 23. Positioning stud; 3. Shock-absorbing pad; 31. L-shaped slot; 4. Oil-immersed transformer; 5. Shock-absorbing sleeve; 51. T-shaped retaining head; 511. Strip-shaped deformation notch; 6. Locking nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figures 1 to 5 This is an embodiment of the present invention, which provides the following technical solution: a vibration damping and noise reduction structure for an oil-immersed transformer, comprising... Multiple shock-absorbing pads 3 are set between the transformer base 1 and the base plate 2; an upper pad groove 12 is opened on the bottom surface of the transformer base 1 to match the shock-absorbing pads 3; a lower pad groove 21 is opened on the top surface of the base plate 2 to match the shock-absorbing pads 3; and a locking structure is set between the shock-absorbing pads 3 and the lower pad groove 21. The design of the upper pad groove 12, the lower pad groove 21 and the locking structure allows the shock-absorbing pads 3 to be directly locked in the lower pad groove 21 during the transformer assembly process, ensuring the installation stability in the horizontal and vertical directions, avoiding unnecessary displacement and falling off of the shock-absorbing pads 3 during the transformer assembly process, and ensuring installation efficiency. Two positioning studs 23 are fixed on the top surface of the base plate 2, positioning holes 11 are opened on the surface of the transformer base 1 for the positioning studs 23 to pass through, and a shock-absorbing sleeve 5 is detachably installed inside the positioning hole 11. The design of the shock-absorbing sleeve 5 ensures that the subsequent positioning studs 23 will not directly contact the inner wall of the positioning hole 11, thereby further isolating vibration and reducing noise.

[0017] In this embodiment, preferably, the locking structure includes two L-shaped locking strips 22 disposed inside the lower pad groove 21 and two L-shaped locking slots 31 opened on the bottom surface of the shock-absorbing pad 3 for the L-shaped locking strips 22 to be inserted.

[0018] In this embodiment, preferably, the cross-sections of the L-shaped clip 22 and the L-shaped groove 31 are both L-shaped, and the shock-absorbing pad 3 is made of cork rubber. During actual installation, the bottom end of the shock-absorbing pad 3 can be pushed into the lower pad groove 21, and the L-shaped clip 22 can be inserted into the L-shaped groove 31, so that the shock-absorbing pad 3 can be stably installed on the base plate 2, ensuring installation stability.

[0019] In this embodiment, preferably, the inner diameter of the shock-absorbing sleeve 5 matches the outer diameter of the positioning stud 23, so that the positioning stud 23 can pass smoothly through the inside of the shock-absorbing sleeve 5.

[0020] In this embodiment, preferably, the bottom end of the shock-absorbing sleeve 5 is engaged and installed on the bottom surface of the transformer base 1, so that the shock-absorbing sleeve 5 is stably installed and limited, ensuring that the shock-absorbing sleeve 5 will not fall off unnecessarily during the transformer assembly process, and ensuring installation efficiency.

[0021] In this embodiment, preferably, the bottom surface of the shock-absorbing sleeve 5 is provided with a plurality of integrated T-shaped clips 51, both of which are made of cork rubber material. The bottom surface of the transformer base 1 is provided with an annular groove 13 for the T-shaped clips 51 to be inserted into the outer side of each positioning hole 11, so that after the shock-absorbing sleeve 5 is pushed into the positioning hole 11, the T-shaped clips 51 will be inserted into the annular groove 13, ensuring the installation stability of the shock-absorbing sleeve 5.

[0022] In this embodiment, preferably, the top of the T-shaped card head 51 has two strip-shaped deformation notches 511, and the cross-section of the strip-shaped deformation notches 511 is rectangular, so that the T-shaped card head 51 is easy to undergo elastic deformation when squeezed, and has sufficient deformation space to ensure that the T-shaped card head 51 can be smoothly inserted into the annular card groove 13.

[0023] In this embodiment, preferably, it also includes two locking nuts 6 symmetrically arranged on the top of the transformer base 1, and the top end of the positioning stud 23 extends through to the top of the transformer base 1 and is threadedly connected to the locking nuts 6.

[0024] In summary, during the assembly of the oil-immersed transformer 4, the damping pad 3 is first installed on the top of the base plate 2, with the bottom end of the damping pad 3 secured in the lower pad groove 21 via a locking structure, ensuring the positional stability of the damping pad 3. Then, the damping sleeve 5 is pushed from the bottom of the transformer base 1 into the positioning hole 11, with the bottom end of the damping sleeve 5 secured to the bottom surface of the transformer base 1 via a T-shaped locking head 51, ensuring the positional stability of the damping sleeve 5. Next, the transformer base 1 at the bottom of the oil-immersed transformer 4 is placed on top of the base plate 2 from top to bottom, causing the top of the positioning stud 23 to pass through the damping sleeve 5 and extend to the top of the transformer base 1, and the top of the damping pad 3 to be embedded in the upper pad groove 12. Finally, the locking nut 6 is fitted onto the top of the positioning stud 23 and locked, thus completing the assembly of the oil-immersed transformer 4. Because both the damping pad 3 and the damping sleeve 5 are well-positioned during the assembly of the oil-immersed transformer 4, no misalignment or other issues will occur. Unnecessary detachment and displacement are avoided, ensuring a quick connection between the transformer base 1 and the base plate 2, and guaranteeing the installation efficiency of the oil-immersed transformer 4. Existing technologies do not employ limiting measures, which could lead to vertical detachment or displacement of the damping pad 3 during the installation of the oil-immersed transformer 4, slowing down the installation progress and causing unnecessary trouble for the normal assembly of the oil-immersed transformer 4. This application, through the design of multiple limiting measures, ensures that the damping pad 3 and damping sleeve 5 are effectively limited during the assembly of the oil-immersed transformer 4, preventing unnecessary detachment and displacement, ensuring the rapid assembly of the oil-immersed transformer 4, and improving the installation progress. During the subsequent operation of the oil-immersed transformer 4, the damping pad 3 can provide good vibration damping and noise reduction between the base plate 2 and the transformer base 1, while the damping sleeve 5, located inside the positioning hole 11, can prevent the positioning stud 23 from directly contacting the inner wall of the positioning hole 11, further reducing vibration and noise.

[0025] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing and noise-reducing structure for an oil-immersed transformer, characterized by: include Multiple shock-absorbing pads (3) are provided between the transformer base (1) and the base plate (2), an upper pad groove (12) is opened on the bottom surface of the transformer base (1) and adapted to the shock-absorbing pads (3), a lower pad groove (21) is opened on the top surface of the base plate (2) and adapted to the shock-absorbing pads (3), and a locking structure is provided between the shock-absorbing pads (3) and the lower pad groove (21). Two positioning studs (23) fixed on the top surface of the base plate (2), a positioning hole (11) opened on the surface of the transformer base (1) for the positioning studs (23) to pass through, and a shock-absorbing sleeve (5) detachably installed inside the positioning hole (11).

2. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 1, characterized in that: The locking structure includes two L-shaped locking strips (22) set inside the lower pad groove (21) and two L-shaped locking grooves (31) opened on the bottom surface of the shock-absorbing pad (3) for the L-shaped locking strips (22) to be inserted.

3. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 2, characterized in that: The L-shaped card strip (22) and the L-shaped card slot (31) both have L-shaped cross sections.

4. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 1, characterized in that: The inner diameter of the shock-absorbing sleeve (5) matches the outer diameter of the positioning stud (23).

5. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 1, characterized in that: The bottom end of the shock-absorbing sleeve (5) is engaged and installed on the bottom surface of the transformer base (1).

6. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 5, characterized in that: The bottom surface of the shock-absorbing sleeve (5) is provided with multiple integrated T-shaped clips (51), and the bottom surface of the transformer base (1) is provided with an annular groove (13) for the T-shaped clips (51) to be inserted relative to the outside of each positioning hole (11).

7. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 6, characterized in that: The top of the T-shaped card head (51) has two strip-shaped deformation notches (511), and the cross-section of the strip-shaped deformation notches (511) is rectangular.

8. The shock-absorbing and noise-reducing structure for an oil-immersed transformer according to claim 1, characterized in that: It also includes two locking nuts (6) symmetrically arranged on the top of the transformer base (1), and the top end of the positioning stud (23) extends through to the top of the transformer base (1) and is threadedly connected to the locking nuts (6).

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