Transformer noise reduction and damping oil tank structure

Abstract

The application discloses a transformer noise reduction and shock absorption oil tank structure, which comprises a bearing base, a first limiting bottom frame is fixedly installed at the top of the bearing base, a protective outer frame is arranged at the inner side of the first limiting bottom frame, a transformer body is arranged at the inner side of the protective outer frame, and sound-absorbing cotton blocks are installed on the inner wall of the protective outer frame, and the application relates to the technical field of transformers. The transformer noise reduction and shock absorption oil tank structure is composed of a multistage shock absorption and noise reduction system through a bottom rubber spacer, built-in sound-absorbing cotton, an outer protective frame and a locally adjustable pressing block. The rubber spacer buffers vibration and blocks vibration transmission, the sound-absorbing cotton is closely attached to the transformer body, and sound absorption and sound insulation double effects are realized in cooperation with the protective outer frame, thereby effectively reducing operation noise. The movable rubber pressing block can accurately suppress local resonance of the tank body, eliminate low-frequency humming and substantially reduce problems, such as fastener loosening and sealing failure, caused by vibration, thereby prolonging the service life of the equipment and guaranteeing long-term stable operation of the transformer.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a transformer noise reduction and vibration damping tank structure. Background Technology

[0002] This invention belongs to the technical field of transformer tank supporting structures. Oil-immersed transformers, as core equipment for power conversion and transmission, are widely used in substations, industrial and mining enterprises, residential distribution areas, and other scenarios in power systems. During long-term energized operation, factors such as core magnetostriction, winding electromagnetic forces, mechanical transmission, and oil flow continuously generate mechanical vibration, electromagnetic vibration, and operating noise. Traditional transformer tank structures have many shortcomings in vibration reduction and noise reduction design, gradually failing to meet current requirements for low noise, high stability, and long service life. Specific problems are manifested in the following aspects: 1. Most existing transformer tanks are single-layer metal enclosures, resting directly on a foundation base. The enclosure and base are connected only by simple rigid pads or direct contact. Vibrations generated by the transformer are transmitted directly to the tank without buffering. Since the natural frequency of the metal enclosure easily coincides with the transformer's vibration frequency, this can easily induce overall or localized resonance, resulting in a continuous low-frequency humming sound. Especially after long-term service, even slight loosening at the enclosure's assembly joints can further exacerbate the resonance, significantly increasing noise levels. This not only pollutes the industrial and residential areas but also, with prolonged resonance, worsens problems such as loosening of transformer fasteners, weld cracking, and aging of seals, drastically shortening the equipment's lifespan. In severe cases, it can even affect the structural stability of the transformer's internal windings and core, creating potential electrical safety hazards.

[0003] 2. Currently, conventional transformer tanks rely solely on the metal enclosure itself for passive sound insulation, without a dedicated sound-absorbing structure. Electromagnetic and mechanical noise generated inside the transformer can diffuse outwards through gaps and walls in the enclosure, making the effect of simply using metal sheets to block noise very limited. While some existing technologies attempt to add external soundproof covers, these are space-consuming, cumbersome to install, and create an air gap between the cover and the enclosure. Vibrations still create sound wave reflections within this gap, significantly reducing noise reduction. Furthermore, external soundproofing structures are susceptible to outdoor wind, rain, and sun exposure, leading to rapid aging and high maintenance costs. The few internal soundproofing structures available are mostly fixed, monolithic panels that cannot conform to the transformer's contours, resulting in numerous acoustic dead zones and incomplete noise absorption.

[0004] 3. Traditional transformer tanks typically have a simple cover plate structure on top. The positioning and clamping structure between the cover plate and the tank body / transformer body is rudimentary. Operational vibrations can easily cause the cover plate to shift and the gaps to widen, further expanding the noise leakage channels. At the same time, the existing tank structure is a fixed integrated design. When a local area of ​​the tank body experiences localized high-frequency vibrations due to assembly tolerances or material differences, the staff cannot suppress the vibration point individually. They can only carry out overall maintenance or replace the entire tank, which is difficult to repair and has high operation and maintenance costs. In addition, the connection methods of traditional tank components are fixed, and the disassembly and assembly process is complicated. This results in low efficiency in equipment inspection, fault repair, and component replacement, making it difficult to meet the current operational needs of rapid operation and maintenance of power equipment.

[0005] Therefore, a transformer noise reduction and vibration damping tank structure is designed to address the shortcomings of existing technologies. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a transformer noise reduction and vibration damping tank structure, which solves the problem that existing transformers are prone to noise after long-term operation and are difficult to manage.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a transformer noise reduction and vibration damping tank structure, comprising a load-bearing base, a first limiting bottom frame fixedly installed on the top of the load-bearing base, a protective outer frame provided on the inner side of the first limiting bottom frame, a transformer body provided on the inner side of the protective outer frame, and sound-absorbing cotton blocks installed on the inner wall of the protective outer frame, wherein a plurality of sound-absorbing cotton blocks are provided, and the sound-absorbing cotton blocks are in contact with the surface of the transformer body.

[0008] Preferably, the front and rear sides of the bottom of the inner cavity of the protective outer frame are provided with through-holes, and a rubber spacer is fixedly installed at the bottom of the inner cavity of the first limiting bottom frame. A plurality of rubber spacers are provided and the rubber spacers are in contact with the bottom of the protective outer frame. A first threaded cylinder is fixedly installed at the front and rear sides of the bottom of the inner cavity of the first limiting bottom frame by a fixing block. A first threaded bolt is provided on the inner side of the through-hole and is threadedly connected to the inner side of the first threaded cylinder.

[0009] Preferably, the front and rear parts of the top two sides of the load-bearing base are fixedly connected to the supporting vertical rods by fixing blocks. An annular guide frame is fixedly connected between the four supporting vertical rods, and two sets of annular guide frames are arranged vertically. The surface of the annular guide frame is provided with a guide groove. An internal thread slider is slidably installed on the inner side of the guide groove, and several internal thread sliders are provided. The inner thread of the internal thread slider is connected to a second threaded bolt.

[0010] Preferably, a cross slot is provided at one end of the second threaded bolt near the transformer body, and a cross plug is slidably installed on the inner side of the cross slot. A rubber pressure block that cooperates with the protective outer frame is fixedly connected to the end of the cross plug away from the second threaded bolt. Rectangular insertion ports that cooperate with the internal threaded slider are provided on both sides of the inner side of the guide groove.

[0011] Preferably, a flat bottom plate is fixedly connected to the top of the supporting vertical rod by a fixing block, one end of the flat bottom plate is in contact with the surface of the protective outer frame, and a second threaded cylinder is fixedly installed on the top of the flat bottom plate by opening.

[0012] Preferably, the top of the protective frame is provided with a mounting opening, the inner side of the mounting opening is provided with a sealing cover, the top of the sealing cover is provided with an arc-shaped through groove for use with the transformer body, and the bottom of the sealing cover is fixedly installed with a second limiting bottom frame for use with the transformer body through a fixing plate.

[0013] Preferably, the inner side of the second threaded cylinder is threadedly connected to a threaded rotating rod, the surface of the threaded rotating rod is fitted with an annular sleeve, a horizontal pressure plate is fixedly connected to one side of the supporting vertical rod, and a pressing cylinder is fixedly installed at the bottom of the horizontal pressure plate by a fixing block.

[0014] Preferably, the front and rear parts of the top two sides of the sealing cap are fixedly installed with positioning cylinders by fixing blocks, and the pressing cylinder is located inside the positioning cylinder.

[0015] This invention provides a transformer noise reduction and vibration damping tank structure. Compared with existing technologies, it has the following advantages: (1) The transformer noise reduction and vibration damping tank structure consists of a multi-level vibration reduction and noise reduction system composed of bottom rubber partition, built-in sound-absorbing cotton, outer protective frame and locally adjustable pressure block. The rubber partition buffers vibration and blocks vibration transmission. The sound-absorbing cotton is close to the transformer body and works with the protective outer frame to achieve the dual effect of sound absorption and sound insulation, effectively reducing operating noise. The movable rubber pressure block can accurately suppress local resonance of the tank body and eliminate low-frequency humming. Overall, it greatly reduces problems such as loose fasteners and seal failure caused by vibration, extends the service life of the equipment, and ensures the long-term stable operation of the transformer.

[0016] (2) The transformer noise reduction and vibration damping tank structure adopts a modular structure with threaded and plug-in combination. Disassembly and assembly do not require complicated tools, and the installation is simple and efficient. Each functional component can be disassembled and replaced individually, making subsequent maintenance and parts maintenance very convenient. The lateral vibration damping components and the top clamping mechanism can be flexibly adjusted in position and clamping force, which can adapt to different specifications of transformers and various vibration conditions. It has strong versatility and effectively reduces the difficulty of on-site operation and maintenance and the cost of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a cross-sectional view of the load-bearing base, the second limiting bottom frame, and the protective outer frame structure of the present invention; Figure 4 This is a side view of the internal structure of the first limiting bottom frame and the protective outer frame of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a section at point B in the middle; Figure 6 This is a schematic diagram of the cross-shaped slot, cross-shaped insert, and rubber pressure block structure of the present invention; Figure 7 This is a schematic diagram of the rubber spacer, the first threaded cylinder, and the first threaded bolt structure of the present invention; Figure 8 This is a schematic diagram of the protective outer frame, sound-absorbing cotton block, and through-hole structure of the present invention; Figure 9 This is a schematic diagram of the sealing cap, the second limiting bottom frame, and the arc-shaped through groove structure of the present invention.

[0018] In the diagram: 1. Load-bearing base; 2. First limiting bottom frame; 3. Protective outer frame; 4. Transformer body; 5. Sound-absorbing cotton block; 6. Through-hole; 7. Rubber spacer; 8. First threaded cylinder; 9. First threaded bolt; 10. Positioning cylinder; 11. Supporting vertical rod; 12. Annular guide frame; 13. Guide groove; 14. Internal threaded slider; 15. Second threaded bolt; 16. Cross slot; 17. Cross insert; 18. Rubber pressure block; 19. Rectangular socket; 20. Second threaded cylinder; 21. Threaded rotating rod; 22. Circular sleeve; 23. Horizontal pressure plate; 24. Pressing cylinder; 25. Sealing cover; 26. Second limiting bottom frame; 27. Flat bottom plate; 28. Arc-shaped through groove; 29. ​​Installation lifting port. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9The present invention provides a technical solution: a transformer noise reduction and vibration damping tank structure, including a load-bearing base 1, a first limiting bottom frame 2 fixedly installed on the top of the load-bearing base 1, a protective outer frame 3 provided on the inner side of the first limiting bottom frame 2, a transformer body 4 provided on the inner side of the protective outer frame 3, and sound-absorbing cotton blocks 5 installed on the inner wall of the protective outer frame 3, and a plurality of sound-absorbing cotton blocks 5 are provided, and the sound-absorbing cotton blocks 5 are in contact with the surface of the transformer body 4.

[0021] Furthermore, the front and rear sides of the bottom of the inner cavity of the protective outer frame 3 are provided with through-holes 6. A rubber spacer 7 is fixedly installed at the bottom of the inner cavity of the first limiting bottom frame 2. Several rubber spacers 7 are provided and fit against the bottom of the protective outer frame 3. The front and rear sides of the bottom of the inner cavity of the first limiting bottom frame 2 are fixedly installed with first threaded cylinders 8 by fixing blocks. A first threaded bolt 9 is provided on the inner side of the through-hole 6 and is threadedly connected to the inner side of the first threaded cylinder 8.

[0022] Among them, the front and rear parts of the top two sides of the load-bearing base 1 are fixedly connected to the support rods 11 by fixing blocks. The four support rods 11 are fixedly connected to the ring guide frame 12, and two sets of ring guide frames 12 are arranged vertically. The surface of the ring guide frame 12 is provided with a guide groove 13. The inner side of the guide groove 13 is slidably installed with an internal thread slider 14, and several internal thread sliders 14 are provided. The inner side of the internal thread slider 14 is threadedly connected with a second threaded bolt 15.

[0023] Among them, the second threaded bolt 15 has a cross slot 16 at one end near the transformer body 4, and a cross plug 17 is slidably installed on the inner side of the cross slot 16. The end of the cross plug 17 away from the second threaded bolt 15 is fixedly connected to a rubber pressure block 18 that is used in conjunction with the protective outer frame 3. Both sides of the inner side of the guide slide groove 13 have rectangular sockets 19 that are used in conjunction with the internal thread slider 14.

[0024] Among them, the top of the supporting vertical rod 11 is fixedly connected to the flat bottom plate 27 by a fixing block. One end of the flat bottom plate 27 is in contact with the surface of the protective outer frame 3. The top of the flat bottom plate 27 is fixedly installed with a second threaded cylinder 20 through an opening.

[0025] The protective outer frame 3 has a mounting port 29 on its top, a sealing cover 25 is provided on the inner side of the mounting port 29, the top of the sealing cover 25 has an arc-shaped through groove 28 that cooperates with the transformer body 4, and the bottom of the sealing cover 25 is fixedly installed with a second limiting bottom frame 26 that cooperates with the transformer body 4 through a fixing plate.

[0026] The inner side of the second threaded cylinder 20 is threadedly connected to a threaded rotating rod 21. A circular sleeve 22 is fitted on the surface of the threaded rotating rod 21. A horizontal pressure plate 23 is fixedly connected to one side of the supporting vertical rod 11. A pressing cylinder 24 is fixedly installed at the bottom of the horizontal pressure plate 23 by a fixing block.

[0027] The sealing cap 25 has a positioning cylinder 10 fixedly installed on the front and rear sides of the top two sides by fixing blocks, and the pressing cylinder 24 is located inside the positioning cylinder 10.

[0028] In use, first install the load-bearing base 1 on the top of the platform, then insert the protective outer frame 3 into the inner side of the first limiting bottom frame 2 from the top, then screw the first threaded bolt 9 through the through-hole 6 into the inner side of the first threaded cylinder 8. As the first threaded bolt 9 is rotated and screwed in, it causes the protective outer frame 3 to press and tighten against several rubber spacers 7. Then, place the transformer body 4 inside the protective outer frame 3 from the installation lifting port 29, and make the sound-absorbing cotton block 5 fit against the transformer body 4. Then, place the sealing cover 25 and... The installation of the lifting port 29 is combined with the arc-shaped through groove 28 to extend the top of the transformer body 4 to the outside. At the same time, the second limiting bottom frame 26 presses down on the top of the transformer body 4. Then, the annular sleeve 22 is fitted onto the surface of the threaded rotating rod 21. The threaded rotating rod 21 is then rotated to connect with the second threaded cylinder 20. The other hand supports the horizontal pressure plate 23 until the threaded rotating rod 21 presses the annular sleeve 22, pressing the pressing cylinder 24 into the inner side of the positioning cylinder 10. As the threaded rotating rod 21 continues to rotate, the pressing cylinder... The transformer body 4 is fixed by pressing the sealing cover 25 with column 24, and the installation is completed. In daily use, the sound-absorbing cotton block 5 and the rubber spacer 7 can absorb the sound emitted by the transformer body 4 during operation. The protective frame 3 itself provides secondary insulation, and the rubber spacer 7 can effectively prevent resonance caused by operating vibration. If the protective frame 3 becomes loose due to long-term operation, the common phenomenon of resonance of the metal in a local part of the outer shell when the transformer body 4 vibrates will occur, resulting in a buzzing sound. At this time, the internal threaded slider 14 is slid from the rectangular socket 19 to the guide groove 13, and the guide groove 13 is moved to the vibration point. Then, a second threaded bolt 15 is screwed into the inside of the internal threaded slider 14, and then the cross plug 17 is inserted into the inside of the cross slot 16. Then, the second threaded bolt 15 is screwed in to make the rubber pressure block 18 press against the vibration area, thereby effectively suppressing the local resonance of the protective frame 3 and facilitating noise treatment.

[0029] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A transformer noise reduction and vibration damping tank structure, comprising a load-bearing base (1), characterized in that: The top of the load-bearing base (1) is fixedly installed with a first limiting bottom frame (2), and a protective outer frame (3) is provided on the inner side of the first limiting bottom frame (2). The transformer body (4) is provided on the inner side of the protective outer frame (3). Sound-absorbing cotton blocks (5) are installed on the inner wall of the protective outer frame (3), and there are several sound-absorbing cotton blocks (5). The sound-absorbing cotton blocks (5) are attached to the surface of the transformer body (4).

2. The transformer noise reduction and vibration damping tank structure according to claim 1, characterized in that: The protective outer frame (3) has through-holes (6) on both the front and rear sides of the bottom of the inner cavity. A rubber spacer (7) is fixedly installed at the bottom of the inner cavity of the first limiting bottom frame (2). There are several rubber spacers (7), and the rubber spacers (7) are in contact with the bottom of the protective outer frame (3). A first threaded cylinder (8) is fixedly installed on both the front and rear sides of the bottom of the inner cavity of the first limiting bottom frame (2) by a fixing block. A first threaded bolt (9) is provided on the inner side of the through-hole (6), and the first threaded bolt (9) is threadedly connected to the inner side of the first threaded cylinder (8).

3. The transformer noise reduction and vibration damping tank structure according to claim 2, characterized in that: The front and rear sides of the top of the load-bearing base (1) are fixedly connected to the support rods (11) by fixing blocks. The four support rods (11) are fixedly connected to the ring guide frame (12), and the ring guide frame (12) is arranged in two sets at the top and bottom. The surface of the ring guide frame (12) is provided with a guide groove (13). The inner side of the guide groove (13) is slidably installed with an internal thread slider (14), and there are several internal thread sliders (14). The inner side of the internal thread slider (14) is threadedly connected with a second threaded bolt (15).

4. The transformer noise reduction and vibration damping tank structure according to claim 3, characterized in that: The second threaded bolt (15) has a cross slot (16) at one end near the transformer body (4). A cross plug (17) is slidably installed on the inner side of the cross slot (16). A rubber pressure block (18) that cooperates with the protective outer frame (3) is fixedly connected to the end of the cross plug (17) away from the second threaded bolt (15). A rectangular socket (19) that cooperates with the internal threaded slider (14) is opened on both sides of the inner side of the guide groove (13).

5. The transformer noise reduction and vibration damping tank structure according to claim 4, characterized in that: The top of the support rod (11) is fixedly connected to a flat bottom plate (27) by a fixing block. One end of the flat bottom plate (27) is in contact with the surface of the protective outer frame (3). The top of the flat bottom plate (27) is fixedly installed with a second threaded cylinder (20) by opening.

6. The transformer noise reduction and vibration damping tank structure according to claim 5, characterized in that: The top of the protective outer frame (3) is provided with a mounting port (29), and a sealing cover (25) is provided on the inner side of the mounting port (29). The top of the sealing cover (25) is provided with an arc-shaped through groove (28) that cooperates with the transformer body (4). The bottom of the sealing cover (25) is fixedly installed with a second limiting bottom frame (26) that cooperates with the transformer body (4) through a fixing plate.

7. The transformer noise reduction and vibration damping tank structure according to claim 6, characterized in that: The inner side of the second threaded cylinder (20) is threadedly connected to a threaded rotating rod (21), and a circular sleeve (22) is fitted on the surface of the threaded rotating rod (21). A horizontal pressure plate (23) is fixedly connected to one side of the supporting vertical rod (11), and a pressing cylinder (24) is fixedly installed at the bottom of the horizontal pressure plate (23) by a fixing block.

8. The transformer noise reduction and vibration damping tank structure according to claim 7, characterized in that: The front and rear sides of the top of the sealing cap (25) are fixedly installed with positioning cylinders (10) by fixing blocks, and the pressing cylinder (24) is located inside the positioning cylinder (10).

Images