Transformer capable of reducing noise

Abstract

The invention discloses a transformer capable of reducing noise, and relates to the technical field of transformers, the transformer comprises a main cylinder body and a vibration suppression assembly, a buffer oil cavity is formed in the main cylinder body, the vibration suppression assembly is mounted in the main cylinder body, and the vibration suppression assembly comprises a carrier plate arranged outside the top end of the main cylinder body; connecting pins are fixedly installed on the two sides of the bottom end of the carrying plate. According to the transformer capable of reducing noise, through the transmission design of the connecting rod and the auxiliary piston, the originally concentrated longitudinal vibration part is converted into the transverse reciprocating motion of the auxiliary piston in the auxiliary cylinder body, on one hand, after the vibration direction is changed, due to the fact that the vibration direction is staggered, the conduction efficiency is reduced; on the other hand, the friction between the auxiliary piston and the auxiliary cylinder body and the flowing of hydraulic oil in the throttle valve in the transverse oil way can further dissipate the converted vibration energy, and double damping is achieved.

Description

A transformer for reducing noise Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a transformer for reducing noise. Background Technology

[0002] Currently, oil-immersed transformers consist of a tank with external finned radiators, a top cover, and a bottom plate with oil tank corners. When this type of transformer is running, the noise emitted by the iron core inside the tank propagates to the surroundings through the tank walls. The pipes connecting the finned radiators to the tank are directly welded to the tank walls, allowing noise to be directly transmitted to the finned radiators through these pipes. This type of transformer tank generates very high noise levels during operation.

[0003] As can be seen from the above description, the main source of transformer operating noise is the magnetostrictive vibration of the core. The transformer core is made of laminated silicon steel sheets. When alternating current passes through the windings and generates an alternating magnetic field, the silicon steel sheets will vibrate due to the magnetostrictive effect. This vibration is the initial excitation source of transformer noise. The vibration of the core itself will directly drive the vibration of the surrounding medium (transformer oil, air), which will then lead to subsequent propagation. To be more specific, the longitudinal vibration in the magnetostrictive vibration of the core is the main excitation source. The amplitude of the longitudinal expansion is relatively larger and is directly related to the magnetic field strength. The amplitude of the transverse vibration is usually much smaller than that of the longitudinal vibration, and its contribution to the overall noise is relatively minor. It exists more as an additional motion of the longitudinal vibration. Therefore, suppressing the longitudinal vibration of the core in the magnetostrictive vibration can effectively suppress the generation of noise and solve the noise problem of transformer operation from the source. Summary of the Invention

[0004] The purpose of this invention is to provide a transformer that reduces noise, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a noise-reducing transformer, comprising a main cylinder and a vibration suppression assembly, wherein a buffer oil chamber is provided inside the main cylinder, the vibration suppression assembly is installed inside the main cylinder, the vibration suppression assembly includes a carrier plate disposed outside the top of the main cylinder, connecting pins are fixedly installed on both sides of the bottom end of the carrier plate, and a main piston is fixedly connected to the middle of the bottom end of the carrier plate, and the piston portion of the main piston slides axially inside the buffer oil chamber, a T-shaped channel is provided in the middle of the main piston, and the bottom opening of the T-shaped channel is connected to the buffer oil chamber below the main piston, and the openings at both ends of the T-shaped channel are connected to the buffer oil chamber above the main piston, a one-way valve is installed inside the T-shaped channel, and the valve core of the one-way valve controls the one-way opening and closing of the bottom opening of the T-shaped channel.

[0006] Furthermore, a sealing bushing is embedded in the middle of the top of the main cylinder, and the sealing bushing slides in conjunction with the rod part of the main piston.

[0007] Furthermore, oil drain ports are provided on both sides of the top of the main cylinder, and the oil drain ports are connected to the openings at both ends of the T-shaped channel through the buffer oil chamber above the main piston.

[0008] Furthermore, oil inlets are provided on both sides of the bottom end of the main cylinder, and the oil inlets are connected to the bottom opening of the T-shaped channel through the buffer oil chamber below the main piston.

[0009] Furthermore, a boss is fixedly installed at the bottom of the buffer oil chamber, and a second one-way valve is connected to both sides of the boss. The valve core of the second one-way valve controls the one-way opening and closing of the oil inlet on the adjacent side.

[0010] Furthermore, vibration dispersion components are externally connected to both sides of the bottom end of the main cylinder body. The vibration dispersion components include auxiliary cylinder bodies fixedly installed on both sides of the bottom end of the main cylinder body. The axial direction of the auxiliary cylinder bodies on both sides is perpendicular to the axial direction of the main cylinder body, and the end of the auxiliary cylinder body on the side adjacent to the main cylinder body is connected to the oil inlet on the corresponding side. The top of the auxiliary cylinder body is connected to a connecting pipe, and the end of the connecting pipe away from the auxiliary cylinder body is connected to the oil outlet.

[0011] Furthermore, the vibration dispersion assembly also includes a secondary piston that is axially slidably mounted inside the secondary cylinder. The tail end of the secondary piston is rotatably connected to a connecting rod, and the end of the connecting rod facing away from the secondary piston is rotatably connected to connecting pins on both sides of the bottom end of the carrier plate.

[0012] Furthermore, the vibration dispersion assembly also includes a throttle valve fixedly installed on the head of the auxiliary piston. The throttle valve has a one-way valve disc in its internal throttle channel, and the one-way valve disc controls the one-way opening and closing of the cavities on both sides of the throttle valve.

[0013] Furthermore, a lower clamp is bolted to the carrier plate, and a transformer core is installed above the recess of the lower clamp, with a three-phase winding inserted into the transformer core.

[0014] Furthermore, an upper clamping member is clamped on the transformer core, and a porcelain bushing is provided above the upper clamping member corresponding to the three-phase winding leads. The transformer core is installed inside the transformer housing, and the bottom of the transformer housing cavity is bolted to the main cylinder. Bases are fixedly installed on both sides of the bottom of the transformer housing, and heat dissipation pipes are arranged around the transformer housing.

[0015] This invention provides a transformer that reduces noise, and has the following beneficial effects;

[0016] 1. In use, the hydraulic oil filled inside the main cylinder can dissipate vibration energy through liquid damping. When the transformer core vibrates longitudinally and drives the carrier plate to move downward, the main piston moves downward inside the main piston. At this time, the one-way valve at the bottom of the T-shaped channel opens, and the hydraulic oil below the main piston flows to the top of the main piston after passing through the openings at both ends of the T-shaped channel and is discharged from the drain port. The T-shaped channel is equivalent to a throttling channel, which can slow down the flow rate of the hydraulic oil in the T-shaped channel. Then, during the flow process, resistance is generated due to viscous friction and oil squeezing, which converts some of the vibration energy into heat energy and consumes it, directly reducing the longitudinal vibration amplitude transmitted to the transformer tank.

[0017] 2. In use, during the downward movement of the carrier plate, the auxiliary pistons connected to both sides of the carrier plate via connecting rods move away from the main cylinder within the auxiliary cylinder. Through the transmission design of the connecting rods and auxiliary pistons, the originally concentrated longitudinal vibration is converted into the lateral reciprocating motion of the auxiliary pistons within the auxiliary cylinder. On the one hand, after the vibration direction changes, the transmission efficiency decreases due to the misalignment of the vibration direction, making it difficult to directly transmit the energy of the lateral motion to the transformer tank, which is dominated by longitudinal vibration. On the other hand, the friction between the auxiliary pistons and the auxiliary cylinder, as well as the flow of hydraulic oil within the throttle valve in the lateral oil circuit, can further dissipate the converted vibration energy, achieving dual vibration reduction.

[0018] 3. In use, under the action of the one-way valve in the T-shaped channel inside the main piston, as the main piston moves downward, hydraulic oil is delivered to the opposite direction of the main piston and enters the cavity of the auxiliary cylinder away from the main cylinder through the connecting pipe connected to the oil drain port. This cavity is the direction of movement of the auxiliary piston after the vibration direction changes. This makes the delivery direction of hydraulic oil opposite to the movement direction of the auxiliary piston, thereby forming a reverse damping force. This reverse force can directly resist the lateral movement of the auxiliary piston, dynamically suppress the vibration amplitude, and prevent the vibration from being transmitted through the structure after conversion. It is equivalent to adding a brake to the vibration and further improving the vibration reduction effect.

[0019] 4. In use, when hydraulic oil flows through the throttle valve to the cavity adjacent to the main cylinder, during the subsequent upward movement of the main piston's longitudinal vibration, check valve one closes while check valve two at the oil inlet on both sides of the bottom of the main cylinder connecting to the auxiliary cylinder opens, re-drawing in hydraulic oil to complete the closed loop. This application not only achieves closed-loop flow of hydraulic oil between the main cylinder and the auxiliary cylinder through the cooperation of check valve one opening when the main piston moves down and check valve two opening when the main piston moves up, eliminating the need for additional oil replenishment and maintaining the damping performance of the hydraulic system for a long time, avoiding vibration damping failure due to insufficient oil, but also ensures that the unidirectional conduction characteristics of check valve one and check valve two ensure that the hydraulic oil flows only in the direction of dissipating vibration, preventing the vibration of the auxiliary cylinder from being transmitted back to the main cylinder when the oil flows in the opposite direction, thus preventing vibration feedback problems and ensuring the stability of the damping system. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of the device of the present invention;

[0021] Figure 2 is a schematic diagram of the flow direction of hydraulic oil inside the device of the present invention;

[0022] Figure 3 is a schematic diagram of the split structure of the device of the present invention;

[0023] Figure 4 is a schematic diagram of the assembly structure of the vibration suppression component and the vibration dispersion component of the present invention.

[0024] Figure 5 is a schematic diagram of the assembly structure of the vibration suppression component and the vibration dispersion component of the present invention.

[0025] Figure 6 is a schematic diagram of the vibration suppression component structure of the present invention;

[0026] Figure 7 is a schematic diagram of the vibration dispersion component of the present invention.

[0027] In the diagram: 1. Main cylinder; 2. Buffer oil chamber; 3. Vibration suppression assembly; 301. Carrier plate; 302. Connecting pin; 303. Main piston; 304. T-shaped channel; 305. One-way valve one; 4. Sealing bushing; 5. Oil drain port; 6. Oil inlet port; 7. Boss; 8. One-way valve two; 9. Vibration dispersion assembly; 901. Secondary cylinder; 902. Connecting pipe; 903. Secondary piston; 904. Connecting rod; 905. Throttle valve; 906. One-way valve disc; 10. Lower clamp; 11. Transformer core; 12. Three-phase winding; 13. Upper clamp; 14. Porcelain bushing; 15. Transformer housing; 16. Base; 17. Cooling pipe. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0029] Please refer to Figures 1 to 6. The present invention provides a technical solution: a transformer for reducing noise, including a main cylinder 1 and a vibration suppression component 3. A buffer oil chamber 2 is provided inside the main cylinder 1. The vibration suppression component 3 is installed inside the main cylinder 1. The vibration suppression component 3 includes a carrier plate 301 disposed outside the top of the main cylinder 1. Connecting pins 302 are fixedly installed on both sides of the bottom end of the carrier plate 301. A main piston 303 is fixedly connected to the middle of the bottom end of the carrier plate 301. The piston part of the main piston 303 slides axially inside the buffer oil chamber 2. A T-shaped channel 304 is provided in the middle of the main piston 303. The bottom opening of the T-shaped channel 304 is connected to the buffer oil chamber 2 below the main piston 303. The openings at both ends of the T-shaped channel 304 are connected to the buffer oil chamber 2 above the main piston 303. A one-way valve 305 is installed inside the T-shaped channel 304. The valve core of the one-way valve 305 controls the one-way opening and closing of the bottom opening of the T-shaped channel 304.

[0030] The specific operation is as follows: the hydraulic oil filled inside the main cylinder 1 can dissipate vibration energy through liquid damping. When the transformer core 11 vibrates longitudinally and drives the carrier plate 301 to move downward, the main piston 303 moves downward inside the main piston 303. At this time, the one-way valve 305 at the bottom opening of the T-shaped channel 304 opens. The hydraulic oil below the main piston 303 flows to the top of the main piston 303 after passing through the openings at both ends of the T-shaped channel 304 and is discharged from the oil outlet 5. The T-shaped channel 304 is equivalent to a throttling channel, which can slow down the flow rate of the hydraulic oil in the T-shaped channel 304. Then, due to viscous friction and oil squeezing, resistance is generated during the flow, which converts some vibration energy into heat energy and consumes it, directly reducing the longitudinal vibration amplitude transmitted to the transformer box 15.

[0031] Please refer to Figures 2 to 5. A sealing bushing 4 is embedded in the middle of the top of the main cylinder 1, and the sealing bushing 4 slides with the rod part of the main piston 303. Oil drain ports 5 are opened on both sides of the top of the main cylinder 1, and the oil drain ports 5 are connected to the openings at both ends of the T-shaped channel 304 through the buffer oil chamber 2 above the main piston 303. Oil inlets 6 are opened on both sides of the bottom of the main cylinder 1, and the oil inlets 6 are connected to the opening at the bottom of the T-shaped channel 304 through the buffer oil chamber 2 below the main piston 303. A boss 7 is fixedly installed at the bottom inside the buffer oil chamber 2, and one-way valves 8 are connected on both sides of the boss 7. The valve core of the one-way valve 8 controls the one-way opening and closing of the adjacent side oil inlet 6.

[0032] The specific operation is as follows: when the hydraulic oil flows through the throttle valve 905 to the cavity adjacent to the main cylinder 1, during the subsequent upward movement of the main piston 303 in longitudinal vibration, the one-way valve 305 closes while the one-way valve 8 at the oil inlet 6 at the bottom of the main cylinder 1 and the auxiliary cylinder 901 opens, and hydraulic oil is drawn back in to complete the closed loop. This application not only achieves the closed-loop flow of hydraulic oil between the main cylinder 1 and the auxiliary cylinder 901 through the cooperation of the one-way valve 305 opening when the main piston 303 moves down and the one-way valve 8 opening when the main piston 303 moves up, but also eliminates the need for additional oil replenishment, thus maintaining the damping performance of the hydraulic system for a long time and avoiding shock absorption failure due to insufficient oil, but also ensures that the one-way conduction characteristics of the one-way valve 305 and the one-way valve 8 ensure that the hydraulic oil flows only in the direction of dissipating vibration, preventing the vibration of the auxiliary cylinder 901 from being transmitted back to the main cylinder 1 when the oil flows in the opposite direction, thus preventing vibration feedback problems and ensuring the stability of the shock absorption system.

[0033] Please refer to Figures 4 to 7. Vibration dispersion components 9 are externally connected to both sides of the bottom end of the main cylinder body 1. The vibration dispersion components 9 include auxiliary cylinder bodies 901 fixedly installed on both sides of the bottom end of the main cylinder body 1. The axial direction of the auxiliary cylinder bodies 901 is perpendicular to the axial direction of the main cylinder body 1, and the ends of the auxiliary cylinder bodies 901 near the main cylinder body 1 are connected to the corresponding oil inlet 6. A connecting pipe 902 is connected to the top of the auxiliary cylinder body 901, and the end of the connecting pipe 902 facing away from the auxiliary cylinder body 901 is connected to the oil outlet 5. The vibration dispersion components 9 also include an auxiliary piston 903 axially slidably installed inside the auxiliary cylinder body 901. A connecting rod 904 is rotatably connected to the tail end of the auxiliary piston 903, and the end of the connecting rod 904 facing away from the auxiliary piston 903 is rotatably connected to the connecting pins 302 on both sides of the bottom end of the carrier plate 301. The vibration dispersion components 9 also... The system includes a throttle valve 905 fixedly installed on the head of the auxiliary piston 903. The throttle valve 905 has a one-way valve disc 906 in its internal throttle channel, which controls the one-way opening and closing of the two chambers on both sides of the throttle valve 905. A lower clamp 10 is bolted on the carrier plate 301, and a transformer core 11 is installed above the recess of the lower clamp 10. A three-phase winding 12 is inserted into the transformer core 11. An upper clamp 13 is clamped on the transformer core 11, and a porcelain bushing 14 is provided above the upper clamp 13 corresponding to the lead wire of the three-phase winding 12. The transformer core 11 is installed inside the transformer housing 15, and the bottom of the transformer housing 15 is bolted to the main cylinder 1. Bases 16 are fixedly installed on both sides of the bottom of the transformer housing 15, and heat dissipation pipes 17 are arranged around the transformer housing 15.

[0034] The specific operation is as follows: During the downward movement of the carrier plate 301, the auxiliary pistons 903, which are connected to both sides of the carrier plate 301 via connecting rods 904, move away from the main cylinder within the auxiliary cylinder 901. Through the transmission design of the connecting rods 904 and the auxiliary pistons 903, the originally concentrated longitudinal vibration is converted into the transverse reciprocating motion of the auxiliary pistons 903 within the auxiliary cylinder 901. On the one hand, after the vibration direction changes, the transmission efficiency decreases due to the misalignment of the vibration direction, making it difficult to directly transmit the energy of the transverse motion to the transformer tank 15, which is dominated by longitudinal vibration. On the other hand, the friction between the auxiliary pistons 903 and the auxiliary cylinder 901, as well as the flow of hydraulic oil within the throttle valve 905 in the transverse oil circuit, can further dissipate the converted energy. Vibration energy is used to achieve dual damping. Under the action of the one-way valve 305 in the T-shaped channel 304 inside the main piston 303, as the main piston 303 moves downward, hydraulic oil is delivered to the opposite direction of the main piston 303 and enters the cavity of the auxiliary cylinder 901 away from the main cylinder through the connecting pipe 902 connected to the oil drain port 5. This side cavity is the direction of movement of the auxiliary piston 903 after the vibration direction changes. This makes the delivery direction of hydraulic oil opposite to the movement direction of the auxiliary piston 903, thus forming a reverse damping force. This reverse force can directly resist the lateral movement of the auxiliary piston 903, dynamically suppressing the vibration amplitude and preventing the vibration from being transmitted through the structure after conversion. It is equivalent to adding a brake to the vibration, further improving the damping effect.

[0035] In summary, when using this noise-reducing transformer:

[0036] First, the hydraulic oil filled inside the main cylinder 1 can dissipate vibration energy through liquid damping. When the transformer core 11 vibrates longitudinally and drives the carrier plate 301 to move downward, the main piston 303 moves downward inside the main piston 303. At this time, the one-way valve 305 at the bottom opening of the T-shaped channel 304 opens. The hydraulic oil below the main piston 303 flows to the top of the main piston 303 after passing through the openings at both ends of the T-shaped channel 304 and is discharged from the oil outlet 5. The T-shaped channel 304 is equivalent to a throttling channel, which can slow down the flow rate of the hydraulic oil in the T-shaped channel 304. Then, during the flow process, resistance is generated due to viscous friction and oil squeezing, which converts some vibration energy into heat energy and consumes it, directly reducing the longitudinal vibration amplitude transmitted to the transformer housing 15.

[0037] Secondly, during the downward movement of the carrier plate 301, the auxiliary pistons 903, which are connected to both sides of the carrier plate 301 by the connecting rods 904, move away from the main cylinder in the auxiliary cylinder 901. Through the transmission design of the connecting rods 904 and the auxiliary pistons 903, the originally concentrated longitudinal vibration is converted into the transverse reciprocating motion of the auxiliary pistons 903 in the auxiliary cylinder 901. On the one hand, after the vibration direction changes, the transmission efficiency is reduced due to the misalignment of the vibration direction, making it difficult for the energy of the transverse motion to be directly transmitted to the transformer box 15, which is dominated by longitudinal vibration. On the other hand, the friction between the auxiliary pistons 903 and the auxiliary cylinder 901, as well as the flow of hydraulic oil in the throttle valve 905 in the transverse oil circuit, can further dissipate the converted vibration energy and achieve dual vibration reduction.

[0038] Then, under the action of the one-way valve 305 in the T-shaped channel 304 inside the main piston 303, as the main piston 303 moves downward, hydraulic oil is delivered to the opposite direction of the main piston 303 and enters the cavity of the auxiliary cylinder 901 away from the main cylinder through the connecting pipe 902 connected to the oil drain port 5. This cavity is the direction of movement of the auxiliary piston 903 after the vibration direction changes. This makes the delivery direction of hydraulic oil opposite to the direction of movement of the auxiliary piston 903, thereby forming a reverse damping force. This reverse force can directly resist the lateral movement of the auxiliary piston 903, dynamically suppress the vibration amplitude, and prevent the vibration from being transmitted through the structure after the transformation. It is equivalent to adding a brake to the vibration and further improving the vibration reduction effect.

[0039] Finally, after the hydraulic oil flows through the throttle valve 905 to the cavity adjacent to the main cylinder 1, during the subsequent upward movement of the main piston 303 in longitudinal vibration, the one-way valve 305 closes while the one-way valve 8 at the oil inlet 6 at the bottom of the main cylinder 1 and the auxiliary cylinder 901 opens, re-drawing in hydraulic oil to complete the closed loop. This application not only achieves closed-loop flow of hydraulic oil between the main cylinder 1 and the auxiliary cylinder 901 through the cooperation of the one-way valve 305 opening when the main piston 303 moves down and the one-way valve 8 opening when the main piston 303 moves up, without the need for additional oil replenishment, but also maintains the damping performance of the hydraulic system for a long time, avoiding shock absorption failure due to insufficient oil. Furthermore, the one-way conduction characteristics of the one-way valve 305 and the one-way valve 8 ensure that the hydraulic oil flows only in the direction of dissipating vibration, preventing the vibration of the auxiliary cylinder 901 from being transmitted back to the main cylinder 1 when the oil flows in the opposite direction, thus preventing vibration feedback problems and ensuring the stability of the shock absorption system.

[0040] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A noise-reducing transformer, comprising a main cylinder (1) and a vibration suppression assembly (3), characterized in that, The main cylinder (1) has a buffer oil chamber (2) inside. The vibration suppression component (3) is installed inside the main cylinder (1). The vibration suppression component (3) includes a carrier plate (301) disposed outside the top of the main cylinder (1). Connecting pins (302) are fixedly installed on both sides of the bottom end of the carrier plate (301), and a main piston (303) is fixedly connected to the middle of the bottom end of the carrier plate (301). The piston part of the main piston (303) is located inside the buffer oil chamber (2) and slides axially. The main piston (303) has a T-shaped channel (304) in the middle, and the bottom opening of the T-shaped channel (304) is connected to the buffer oil chamber (2) below the main piston (303), and the openings at both ends of the T-shaped channel (304) are connected to the buffer oil chamber (2) above the main piston (303). A one-way valve (305) is installed inside the T-shaped channel (304), and the valve core of the one-way valve (305) controls the one-way opening and closing of the bottom opening of the T-shaped channel (304).

2. The noise-reducing transformer according to claim 1, characterized in that, The main cylinder (1) has a sealing bushing (4) embedded in the middle of its top end, and the sealing bushing (4) slides in conjunction with the rod part of the main piston (303).

3. A noise-reducing transformer according to claim 2, characterized in that, The main cylinder (1) has oil drain ports (5) on both sides of the top end, and the oil drain ports (5) are connected to the openings at both ends of the T-shaped channel (304) through the buffer oil chamber (2) above the main piston (303).

4. A noise-reducing transformer according to claim 3, characterized in that, The main cylinder (1) has oil inlets (6) on both sides of the bottom end, and the oil inlets (6) are connected to the bottom opening of the buffer oil chamber (2) below the main piston (303) and the T-shaped channel (304).

5. A noise-reducing transformer according to claim 4, characterized in that, The bottom of the buffer oil chamber (2) is fixedly installed with a boss (7), and one-way valves (8) are connected on both sides of the boss (7). The valve core of the one-way valve (8) controls the one-way opening and closing of the adjacent side oil inlet (6).

6. A noise-reducing transformer according to claim 5, characterized in that, The main cylinder (1) has vibration dispersion components (9) connected to both sides of its bottom end. The vibration dispersion components (9) include auxiliary cylinders (901) fixedly installed on both sides of the bottom end of the main cylinder (1). The axis of the auxiliary cylinders (901) on both sides is perpendicular to the axis of the main cylinder (1). The ends of the auxiliary cylinders (901) on the side adjacent to the main cylinder (1) are connected to the oil inlet (6) on the corresponding side. The top of the auxiliary cylinder (901) is connected to a connecting pipe (902), and the end of the connecting pipe (902) away from the auxiliary cylinder (901) is connected to the oil outlet (5).

7. A noise-reducing transformer according to claim 6, characterized in that, The vibration dispersion assembly (9) also includes a secondary piston (903) that is axially slidably installed inside the secondary cylinder (901). The tail end of the secondary piston (903) is rotatably connected to a connecting rod (904), and the end of the connecting rod (904) away from the secondary piston (903) is rotatably connected to the connecting pins (302) on both sides of the bottom end of the carrier plate (301).

8. A noise-reducing transformer according to claim 7, characterized in that, The vibration dispersion assembly (9) also includes a throttle valve (905) fixedly installed on the head of the auxiliary piston (903). The throttle valve (905) has a one-way valve disc (906) in the throttle channel inside, and the one-way valve disc (906) controls the one-way opening and closing of the cavities on both sides of the throttle valve (905).

9. A noise-reducing transformer according to claim 8, characterized in that, A lower clamp (10) is bolted on the carrier plate (301), and a transformer core (11) is installed above the recess of the lower clamp (10), and a three-phase winding (12) is inserted on the transformer core (11).

10. A noise-reducing transformer according to claim 9, characterized in that, The transformer core (11) is clamped with an upper clamp (13), and a porcelain bushing (14) is provided above the upper clamp (13) corresponding to the lead wire of the three-phase winding (12). The transformer core (11) is installed inside the transformer box (15), and the bottom of the transformer box (15) cavity is bolted to the main cylinder (1). The bottom of the transformer box (15) is fixedly installed with a base (16) on both sides, and heat dissipation pipes (17) are arranged around the transformer box (15).

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