Noise reduction structure of transformer

Abstract

The utility model relates to a kind of noise reduction structure of transformer, belong to transformer manufacturing technical field.The technical scheme is: oil tank angle contact composite board (7) and reinforcing rib welded composite board (8) structure is same, all by glass fiber inner ply (9), ply internal reinforcing rib (10) and glass fiber outer ply (11) are constituted, ply internal reinforcing rib is made of outer frame (15) and inner rib (16) of integrated structure, the lower of two inner ribs is covered with glass fiber cloth, constitutes glass fiber inner ply, the upper of two inner ribs is covered with glass fiber cloth, constitutes glass fiber outer ply;The space between glass fiber inner ply and glass fiber outer ply is filled with glass fiber filament.The utility model increases the noise reduction measure around the body on the basis of original oil tank bottom noise reduction, forms a all-round, multilevel noise reduction system, effectively reduces the noise level of transformer, reduces the influence to surrounding environment, improves the stability and reliability of equipment.

Description

Technical Field

[0001] This utility model relates to a noise reduction structure for a transformer, belonging to the field of transformer manufacturing technology. Background Technology

[0002] Power transformers are among the most complex and critical electrical devices in a power system. With increasing voltage levels and capacitance, transformer noise increases significantly. This noise not only disrupts the lives and work of nearby residents but can also affect the stability and lifespan of electrical equipment. As people's demands for quality living environments and environmental awareness grow, noise generated during transformer operation has become a focus of attention for power departments and related enterprises. To reduce transformer noise, the applicant's Chinese invention patent CN202011104063.3, entitled "A Composite Tank Bottom Structure and Method for Vibration Reduction and Noise Reduction," proposes a method for noise reduction at the bottom of the tank. This method primarily considers that vibrations generated during transformer operation are transmitted to the surrounding environment through the bottom of the tank, thus generating noise. By implementing a series of noise reduction measures at the bottom of the tank, such as installing vibration damping devices and using sound insulation materials, the transmission of vibration can be reduced to a certain extent, thereby reducing noise propagation. However, this method of noise reduction only at the bottom of the tank has certain limitations. Because the sources of transformer noise are complex, in addition to vibration transmission at the bottom of the tank, the area around the transformer body is also a significant area for noise generation and propagation. The iron core inside the device undergoes magnetostrictive deformation under the influence of an alternating magnetic field, and the current in the windings also generates electromagnetic force. All of these factors cause the device to vibrate and generate noise. Moreover, the space around the device is relatively open, making it easier for noise to diffuse into the surrounding environment. Utility Model Content

[0003] The purpose of this utility model is to provide a noise reduction structure for transformers. Based on the original noise reduction at the bottom of the oil tank, noise reduction measures are added around the transformer body, forming a comprehensive and multi-layered noise reduction system. This effectively reduces the noise level of the transformer, reduces the impact on the surrounding environment, improves the stability and reliability of the equipment, reduces complaints and maintenance costs caused by noise problems, and solves the above-mentioned technical problems existing in the prior art.

[0004] The technical solution of this utility model is:

[0005] A noise reduction structure for a transformer includes a transformer cooling system on the side of the transformer tank, a transformer oil conservator above the tank, and multiple transformer riser supports on the tank. Multiple tank reinforcing ribs are vertically arranged on the outer side wall of the tank, and a reinforcing rib welded composite plate is welded to these ribs. An oil tank corner contact composite plate is located at the corner of the tank side wall, with its two sides welded to adjacent reinforcing ribs at the corner. The corner contact composite plate and the reinforcing rib welded composite plate have identical structures, both consisting of a glass fiber inner layer, internal reinforcing ribs, and glass fiber... The structure comprises a glass fiber outer layer, wherein the internal reinforcing ribs of the layer consist of an integral outer frame and inner ribs, the cross-section of which is a boss shape, and the inner ribs are the protruding parts; the two internal reinforcing ribs of the layer are arranged parallel to each other, and the inner ribs of the two internal reinforcing ribs are arranged inward; the bottom of the two inner ribs is covered with glass fiber cloth, forming a glass fiber inner layer, and the top of the two inner ribs is covered with glass fiber cloth, forming a glass fiber outer layer; the space between the glass fiber inner layer and the glass fiber outer layer is filled with glass fiber filaments; the internal reinforcing ribs of the layer are arranged laterally, and the outer frame of the internal reinforcing ribs of the layer is welded together with the intersecting fuel tank reinforcing ribs.

[0006] The outer glass fiber lining is located on the outermost side of the transformer tank. The outer glass fiber lining is made of high-density glass fiber cloth, while the inner glass fiber lining is made of low-density glass fiber cloth.

[0007] The transformer tank sidewall is provided with a circular tank high voltage riser reinforcing rib, and one of the multiple transformer risers is set on the tank high voltage riser reinforcing rib; the tank high voltage riser reinforcing rib is provided with vertically arranged U-shaped reinforcing ribs on both sides, and the tank high voltage riser reinforcing rib and the U-shaped reinforcing rib are welded together by strip reinforcing ribs.

[0008] The U-shaped reinforcing rib has a U-shaped cross-section and is installed on the reinforcing rib welded composite plate. A transformer shoulder is provided on the upper part of the U-shaped reinforcing rib.

[0009] The fuel tank reinforcing ribs are welded to the fuel tank corner contact composite plate and the reinforcing rib welded composite plate, and the internal reinforcing ribs of the layer are welded together.

[0010] The inner fiberglass liner is composed of multiple layers of fiberglass cloth, with sound-absorbing particles and adhesives added between each layer; the outer fiberglass liner is composed of multiple layers of fiberglass cloth, with damping materials and adhesives added between each layer.

[0011] The beneficial effects of this utility model are: on the basis of the original noise reduction at the bottom of the oil tank, noise reduction measures around the transformer body are added, forming a comprehensive and multi-level noise reduction system, which effectively reduces the noise level of the transformer, reduces the impact on the surrounding environment, improves the stability and reliability of the equipment, reduces complaints and maintenance costs caused by noise problems, and reducing transformer noise is also an important measure that meets the requirements of sustainable development, and can play a certain role in improving people's quality of life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall external structure of the transformer in which the present invention is implemented;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model implemented in a transformer oil tank;

[0014] Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0015] In the diagram: 1. Transformer oil tank; 2. Transformer cooling system; 3. Transformer oil conservator; 4. Transformer riser; 5. Oil tank reinforcing rib; 6. Oil tank high voltage riser reinforcing rib; 7. Oil tank corner contact composite plate; 8. Reinforcing rib welded composite plate; 9. Fiberglass inner layer; 10. Inner reinforcing rib of the layer; 11. Fiberglass outer layer; 12. Strip reinforcing rib; 13. Transformer shoulder; 14. U-shaped reinforcing rib; 15. Outer frame; 16. Inner rib; 17. Fiberglass filament. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and examples.

[0017] A noise reduction structure for a transformer includes a transformer cooling system 2 on the side of a transformer tank 1, a transformer oil conservator 3 above the transformer tank 1, and multiple transformer riser seats 4 on the transformer tank 1. Multiple tank reinforcing ribs 5 are vertically arranged on the outer side wall of the transformer tank 1, and a reinforcing rib welded composite plate 8 is welded to the tank reinforcing ribs 5 on the side wall of the transformer tank 1. An oil tank corner contact composite plate 7 is provided at the corner of the side wall of the transformer tank 1, and the two sides of the oil tank corner contact composite plate 7 are welded to the adjacent oil tank reinforcing ribs 5 at the corner. The oil tank corner contact composite plate 7 and the reinforcing rib welded composite plate 8 have the same structure, both consisting of an inner glass fiber layup 9, internal reinforcing ribs 10, and an outer glass fiber layup 1. The structure comprises an inner reinforcing rib 10 consisting of an integral outer frame 15 and inner ribs 16, the cross-section of which is a boss shape, with the inner ribs 16 being the protruding part; two inner reinforcing ribs 10 are arranged parallel to each other, with the inner ribs 16 of both inner reinforcing ribs 10 arranged inward; the area below the two inner ribs 16 is covered with glass fiber cloth, forming a glass fiber inner layup 9; the area above the two inner ribs 16 is covered with glass fiber cloth, forming a glass fiber outer layup 11; the space between the glass fiber inner layup 9 and the glass fiber outer layup 11 is filled with glass fiber filaments 17; the inner reinforcing ribs 10 are arranged laterally, and the outer frame 15 of the inner reinforcing ribs 10 is welded together with the intersecting fuel tank reinforcing ribs 5.

[0018] The outer glass fiber lining 11 is located on the outermost side of the transformer tank 1. The outer glass fiber lining is made of high-density glass fiber cloth, while the inner glass fiber lining 9 is made of low-density glass fiber cloth.

[0019] The transformer tank 1 has a circular high-voltage riser rib 6 on its side wall, and one of the multiple transformer risers 4 is installed on the high-voltage riser rib 6. The high-voltage riser rib 6 has vertically arranged U-shaped ribs 14 on both sides, and the high-voltage riser rib 6 and the U-shaped rib 14 are welded together by strip ribs 12.

[0020] The U-shaped reinforcing rib 14 has a U-shaped cross section and is installed on the reinforcing rib welded composite plate 8. A transformer shoulder seat 13 is provided on the upper part of the U-shaped reinforcing rib 14.

[0021] The oil tank reinforcing rib 5 is welded to the oil tank corner contact composite plate 7 and the internal reinforcing rib 10 of the reinforcing rib welded composite plate 8.

[0022] Use 600g / m 3 Fifteen layers of fiberglass cloth are laid to form the fiberglass inner liner 9. Internal reinforcing ribs 10 are then placed on both sides of the inner liner 9, with their inner ribs 16 arranged opposite each other, pressing down on the inner liner 9. Then, 800g / m² of PVC fabric is used. 3Fifteen layers of fiberglass cloth are laid to form the outer fiberglass layer 11. The 0° filaments of the fiberglass cloth are in the long axis direction. The space between the inner fiberglass layer 9 and the outer fiberglass layer 11 is filled with fiberglass filaments 17. The fiberglass filaments 17 fill the spaces between the inner ribs 16 of the internal reinforcing ribs 10 of the two layers. The heavier fiberglass cloth has a larger weave and is placed in the inner layer of the fuel tank to reduce noise. The lighter fiberglass cloth is placed in the outer layer because its weave is smaller and relatively flatter, resulting in a more aesthetically pleasing appearance.

[0023] When laying fifteen layers of low-density fiberglass cloth to form the inner fiberglass layer 9, sound-absorbing particles and adhesives are added between each layer of fiberglass cloth; when laying fifteen layers of high-density fiberglass cloth to form the outer fiberglass layer 11, damping materials and adhesives are added between each layer of fiberglass cloth.

[0024] After the transformer shoulder and U-shaped reinforcing rib are welded together, they are welded to the outer frame of the internal reinforcing rib of the layer. The strip reinforcing rib is welded to both the outer frame of the internal reinforcing rib of the layer and the U-shaped reinforcing rib. The transformer tank has four corners, each corner is formed by two tank corner contact composite plates welded to the outer frame of the internal reinforcing rib of the layer.

[0025] To further improve the noise reduction effect of transformers, this invention adds noise reduction measures around the transformer body, building upon the existing bottom noise reduction system. By adding noise reduction measures around the transformer body to the existing bottom noise reduction, a comprehensive, multi-layered noise reduction system is formed. This integrated noise reduction method can more effectively reduce the noise level of the transformer and reduce its impact on the surrounding environment. For residents, this means a quieter living environment; for power companies, it improves equipment stability and reliability, reducing complaints and maintenance costs caused by noise problems. Moreover, from an environmental perspective, reducing transformer noise is an important measure that meets the requirements of sustainable development and helps create a more harmonious and quiet social environment. In this embodiment, the transformer tank of this invention will significantly reduce noise and has flame-retardant properties, playing a role in improving people's quality of life.

Claims

1. A noise reduction structure for a transformer, wherein a transformer cooling system (2) is provided on the side of the transformer tank (1), a transformer oil conservator (3) is provided above the transformer tank (1), and multiple transformer riser seats (4) are provided on the transformer tank (1); characterized in that: Multiple tank reinforcing ribs (5) are vertically arranged on the outer side wall of the transformer tank (1). A reinforcing rib welding composite plate (8) is welded to the tank reinforcing ribs (5) on the side wall of the transformer tank (1). A tank corner contact composite plate (7) is arranged at the corner of the side wall of the transformer tank (1). The two sides of the tank corner contact composite plate (7) are welded to the adjacent tank reinforcing ribs (5) at the corner. The tank corner contact composite plate (7) and the reinforcing rib welding composite plate (8) have the same structure. They are both composed of a glass fiber inner layer (9), an inner reinforcing rib (10) and a glass fiber outer layer (11). The inner reinforcing rib (10) is composed of an integral outer frame (15) and an inner rib (16). Its cross-section is in the shape of a boss, and the inner rib (16) is the protruding part; the two inner reinforcing ribs (10) of the two ply are arranged in parallel to each other, and the inner ribs (16) of the two inner reinforcing ribs (10) are arranged inward. The bottom of the two inner ribs (16) is covered with glass fiber cloth, forming the glass fiber inner ply (9), and the top of the two inner ribs (16) is covered with glass fiber cloth, forming the glass fiber outer ply (11); the space between the glass fiber inner ply (9) and the glass fiber outer ply (11) is filled with glass fiber filaments (17); the inner reinforcing ribs (10) of the ply are arranged in the transverse direction, and the outer frame (15) of the inner reinforcing ribs (10) of the ply is welded together with the intersecting fuel tank reinforcing ribs (5).

2. The noise reduction structure for a transformer according to claim 1, characterized in that: The outer glass fiber lining (11) is located at the outermost part of the transformer tank (1). The outer glass fiber lining is made of glass fiber cloth with a higher density, and the inner glass fiber lining (9) is made of glass fiber cloth with a lower density.

3. A noise reduction structure for a transformer according to claim 1 or 2, characterized in that: The transformer tank (1) has a circular high-voltage riser reinforcement rib (6) on its side wall. One of the multiple transformer risers (4) is located on the high-voltage riser reinforcement rib (6). The high-voltage riser reinforcement rib (6) has vertically arranged U-shaped reinforcement ribs (14) on both sides. The high-voltage riser reinforcement rib (6) and the U-shaped reinforcement rib (14) are welded together by strip reinforcement ribs (12).

4. The noise reduction structure for a transformer according to claim 3, characterized in that: The U-shaped reinforcing rib (14) has a U-shaped cross section and is set on the reinforcing rib welded composite plate (8). A transformer shoulder seat (13) is provided on the upper part of the U-shaped reinforcing rib (14).

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