Transformer with noise reduction function

Abstract

The invention discloses a transformer with a noise reduction function, and relates to the technical field of transformers, the transformer comprises a shell, an air outlet and an air inlet of the shell are formed in the upper side and the lower side respectively, a connecting shell is fixedly connected to the top of the shell, and a plurality of transformer bodies are arranged in the shell; a radiator used for radiating heat of the transformer body is arranged in the shell, air cylinders symmetrically distributed along the shell are fixedly connected into the shell, and a fixing frame is fixedly connected to the side, close to an air outlet, of the interior of the shell. The multiple first sound absorption plates distributed in the N shape are arranged close to the air outlet, a complex labyrinth type airflow channel is formed, sound waves need to be reflected and refracted multiple times in the transmission process, part of sound wave energy can be consumed in each reflection, meanwhile, noise can be prevented from being transmitted out from hinge shaft seams of the first rotating plates through the noise reduction pads, and therefore the noise reduction effect is improved. The leakage of most noise is blocked, so that the effect of attenuating the noise is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a transformer with a noise reduction function. Background Art

[0002] Transformer noise primarily comes from electromagnetic and mechanical sources. For example, when current flows through a transformer's coils, it generates an alternating magnetic field in the core. This alternating magnetic field causes the core material to expand and contract periodically. Accumulating these fields at high frequencies generates vibrations, which in turn cause noise. Furthermore, to ensure proper operation, transformers typically require cooling devices such as fans and oil pumps, which generate a certain amount of noise during operation. Transformer noise can seriously impact people's quality of life and work efficiency. Effective noise reduction measures can reduce noise pollution.

[0003] Common transformer noise reduction methods currently available on the market include soundproofing enclosures, sound-absorbing panels, or ventilation mufflers. Adequate ventilation and heat dissipation are essential for transformer operation, but this often results in increased noise leakage. Conversely, overly stringent noise reduction measures can compromise ventilation and lead to equipment overheating. Existing technologies lack the ability to flexibly prioritize ventilation and heat dissipation over noise reduction, making it impossible to dynamically balance the two based on actual needs. Summary of the Invention

[0004] In order to overcome the shortcomings of the above-mentioned background technology, the present invention provides a transformer with a noise reduction function.

[0005] A transformer with a noise reduction function comprises a shell, wherein the air outlet and the air inlet of the shell are respectively arranged on the upper and lower sides, the top of the shell is fixedly connected to a connecting shell, a plurality of transformer bodies are arranged inside the shell, and a radiator for dissipating heat of the transformer bodies is arranged inside the shell, cylinders symmetrically distributed along the shell are fixedly connected inside the shell, a fixing frame is fixedly connected to the side of the shell close to the air outlet, a lifting frame is slidably connected to the connecting shell, the telescopic rod of the cylinder is fixedly connected to the lifting frame, and first rotating plates uniformly distributed laterally are rotatably connected between the lifting frame and the fixing frame, at least three rotatably connected first rotating plates form a group, two adjacent first rotating plates form a V-shape, and a first sound-absorbing panel is fixedly connected in the middle of each of the first rotating plates.

[0006] Furthermore, a filter screen is included, and the filter screen is fixedly connected to a side of the connecting shell close to the air outlet.

[0007] Furthermore, it also includes a plurality of soft sound-absorbing pads, and the plurality of sound-absorbing pads are respectively arranged at the hinge shafts of adjacent first rotating plates.

[0008] Furthermore, it also includes a first connecting rod, which is rotatably connected to the lifting frame, and a second sound absorbing panel is rotatably connected between the first connecting rod and the inner wall of the connecting shell.

[0009] Furthermore, it also includes fixed guide rails symmetrically distributed along the connecting shell, the fixed guide rails are fixedly connected to the inner wall of the connecting shell, the fixed guide rails are tilted to one side, and a sliding plate is slidably connected between the fixed guide rails on the same side laterally, the sliding plate is slidably connected to the lifting frame, and a second connecting rod is rotatably connected between the first rotating plate on the top side and the adjacent sliding plate.

[0010] Furthermore, it also includes a fixed shell symmetrically distributed along the shell, the fixed shell is fixed to the side of the shell close to the air inlet, and the side of the fixed shell close to the air inlet is fixed to a third sound absorbing board.

[0011] Furthermore, a longitudinally distributed V-shaped channel is opened in the fixed shell, and each V-shaped channel of the fixed shell is fixed with a flow guide and sound absorbing plate symmetrically distributed along the V-shaped channel.

[0012] Furthermore, it also includes a guide frame, which is fixedly connected to the cylinder telescopic rod on one side, and the fixed shell is slidably connected to a sliding frame on the side close to the guide frame. The guide frame is provided with a movable groove on the side close to the sliding frame, and the guide frame is movably connected to the sliding frame through the movable groove. The fixed shell is rotatably connected to a second rotating plate evenly distributed in the longitudinal direction on the side close to the sliding frame, and the second rotating plate is rotatably connected to the adjacent sliding frame.

[0013] The present invention has the following advantages: 1. The present invention forms a complex maze-like airflow channel by arranging multiple N-shaped first sound-absorbing panels near the air outlet. This causes sound waves to undergo multiple reflections and refractions during propagation, each of which consumes part of the sound wave energy. At the same time, the sound-absorbing pads can block noise from escaping through the hinge joint of the first rotating plate, thereby preventing most noise from escaping and achieving the effect of noise attenuation.

[0014] 2. The present invention provides a plurality of N-shaped first sound-absorbing panels near the air outlet, so that the directly transmitted noise path is interrupted by the plurality of N-shaped first sound-absorbing panels, thereby reducing the possibility of linear noise propagation and further reducing the noise intensity.

[0015] 3. The present invention adjusts the angle of the corner between the first rotating plates by using a cylinder, so that the priority of ventilation and heat dissipation and noise reduction can be determined according to actual conditions, so as to dynamically adjust the noise reduction measures.

[0016] 4. The present invention ensures that after the noise passes through the first sound-absorbing panel from the N-shaped channel at the air outlet and is absorbed, it is also directed upward to the second sound-absorbing panel for secondary sound absorption, thereby achieving a secondary noise reduction effect and further reducing the noise intensity.

[0017] 5. The lifting frame of the present invention drives the second sound absorbing panel to swing in the same direction through the first connecting rod, so that the second sound absorbing panel can adapt to the guidance of the N-shaped channel, thereby allowing the sound waves from the N-shaped channel to be guided to the second sound absorbing panel to the greatest extent.

[0018] 6. The present invention uses the structural design of the fixed guide rail, the sliding plate and the second connecting rod to lock and fix each first rotating plate in the horizontal direction to prevent the first rotating plate from swinging back and forth and generating noise due to the influence of wind, while not affecting the angle adjustment of the first rotating plate in the longitudinal direction.

[0019] 7. The present invention reduces noise at the air inlet through the third sound-absorbing panel and the guide sound-absorbing panel, thereby enhancing the noise reduction effect.

[0020] 8. The present invention controls the forward and reverse rotation of the second rotating plate by extending and retracting the cylinder, thereby dynamically adjusting the size of the air inlet, thereby reducing the entry of cold air in winter and increasing the ventilation and heat dissipation effect in summer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a sectional view of the three-dimensional structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the cylinder, fixing frame and lifting frame of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the cylinder, lifting frame, first rotating plate and other components of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the first sound-absorbing panel and the sound-absorbing pad and other components of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the lifting frame, the first connecting rod and the second sound-absorbing panel of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the first connecting rod and the second sound-absorbing panel of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixed guide rail, sliding plate, second connecting rod and other components of the present invention.

[0029] Figure 9 It is a schematic diagram of the three-dimensional structure of the lifting frame, fixed guide rail and sliding plate components of the present invention.

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the outer shell, fixed shell and guide sound absorbing plate and other components of the present invention.

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the fixed shell, the guide sound absorbing plate and other components of the present invention.

[0032] Figure 12 It is a schematic diagram of the three-dimensional structure of the fixed shell, guide frame, sliding frame and other components of the present invention.

[0033] Figure 13 It is a schematic diagram of the three-dimensional structure of the guide sound absorbing plate and the sliding frame and other components of the present invention.

[0034] Figure 14 It is a three-dimensional structural diagram of the fixed shell, sliding frame and other components of the present invention.

[0035] Names and serial numbers of parts in the figure: 101-housing, 102-connecting housing, 103-filter, 104-transformer body, 105-radiator, 106-cylinder, 107-fixing frame, 108-lifting frame, 109-first rotating plate, 110-first sound-absorbing panel, 111-silencer pad, 201-first connecting rod, 202-second sound-absorbing panel, 301-fixed guide rail, 302-sliding plate, 303-second connecting rod, 401-fixed housing, 402-third sound-absorbing panel, 403-deflector sound-absorbing panel, 501-guide frame, 502-sliding frame, 503-second rotating plate. DETAILED DESCRIPTION

[0036] The following further describes the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0037] Example 1: A transformer with noise reduction function, such as Figure 1-Figure 5As shown, it includes a shell 101, the air outlet and the air inlet of the shell 101 are respectively arranged on the upper and lower sides, the top of the shell 101 is fixedly connected to a connecting shell 102, the right side of the connecting shell 102 is fixedly connected to a filter 103 for dust prevention, three transformer bodies 104 are arranged inside the shell 101, two radiators 105 are arranged inside the shell 101, and the radiator 105 is set as a cooling fan for dissipating heat for the transformer body 104, the shell 101 is fixedly connected to the cylinder 106 distributed symmetrically along the left and right sides of the shell 101, and the shell 101 A fixing frame 107 is fixed to the upper side of the interior, and a lifting frame 108 is slidably connected to the connecting shell 102 in the up and down directions. The telescopic rod of the cylinder 106 is fixed to the lifting frame 108, and first rotating plates 109 distributed evenly in the horizontal direction are rotatably connected between the lifting frame 108 and the fixing frame 107. Three rotatably connected first rotating plates 109 form a group, and each group of first rotating plates 109 forms an N shape. A first sound-absorbing panel 110 is fixed in the middle of each first rotating plate 109, and soft sound-absorbing pads 111 are provided at the hinge axes of adjacent first rotating plates 109.

[0038] This is a transformer with a noise reduction function. When the transformer body 104 is in operation, the radiator 105 is started at the same time to dissipate heat. External air enters through the air inlet at the bottom and is discharged through the air outlet at the top. Multiple N-shaped first sound-absorbing panels 110 arranged near the air outlet can form a complex maze-like airflow channel, so that sound waves need to undergo multiple reflections and refractions during propagation. Each reflection consumes part of the sound wave energy. At the same time, the sound-absorbing pad 111 can prevent noise from being transmitted from the hinge shaft gap of the first rotating plate 109. In this way, most of the noise is blocked from leaking out, thereby achieving the effect of attenuating noise.

[0039] Moreover, the present invention provides a plurality of N-shaped first sound absorbing panels 110 near the air outlet, so that the directly propagated noise path is interrupted by the plurality of N-shaped first sound absorbing panels 110, thereby reducing the possibility of linear noise propagation and further reducing the noise intensity.

[0040] Because the ambient noise level often changes, or the transformer is located in an area with strict noise control requirements, or seasonal temperature changes have different requirements for ventilation and heat dissipation, it may be necessary to determine the priority of ventilation and heat dissipation and noise reduction based on actual conditions to dynamically adjust noise reduction measures. For example, in the summer, more ventilation is needed to enhance heat dissipation, or when the ambient noise level is very low, the noise reduction function may need to be weakened and the ventilation function may need to be enhanced. In the winter, less ventilation may be required to reduce the influx of cold air, or when the ambient noise level is very high, the noise reduction function may need to be strengthened and the ventilation function may need to be weakened. The specific dynamic control is performed through the following operations: When the telescopic rod of the control cylinder 106 is extended, the telescopic rod of the cylinder 106 pushes the lifting frame 108 to move upward, thereby pulling the first rotating plate 109 on the upper side upward, so that the angle of the corner between the first rotating plates 109 increases. Each first rotating plate 109 drives the first sound-absorbing plate 110 thereon to swing in a direction of being extended and straightened. In this case, the air flow channel is less obstructed and the ventilation is smoother.

[0041] When the telescopic rod of the control cylinder 106 is shortened, the telescopic rod of the cylinder 106 pushes the lifting frame 108 to move downward, thereby pushing the first rotating plate 109 on the upper side downward, so that the angle of the corner between the first rotating plates 109 is reduced, and each first rotating plate 109 drives the first sound-absorbing plate 110 thereon to swing in a direction of being compressed and folded. In this case, the number of reflections of the sound wave is increased, thereby extending the propagation path of the sound wave, and further increasing the consumption of the sound wave energy, so that the air flow channel is more obstructed and the noise is reduced.

[0042] like Figure 6 and Figure 7 As shown, it also includes a first connecting rod 201, which is rotatably connected to the right rear part of the lifting frame 108, and a second sound absorbing panel 202 is rotatably connected between the first connecting rod 201 and the left inner wall of the connecting shell 102. The second sound absorbing panel 202 is located above the first rotating plate 109.

[0043] After the noise passes through the first sound-absorbing panel 110 from the N-shaped channel at the air outlet for absorption, it is directed upward to the second sound-absorbing panel 202 for secondary absorption, achieving a secondary noise reduction effect and further reducing the noise intensity. In addition, since the lifting frame 108 moves up and down, it drives the first rotating plate 109 to rotate, thereby changing the guidance of the N-shaped channel. At this time, the lifting frame 108 drives the second sound-absorbing panel 202 to swing in the same direction through the first connecting rod 201, so that the second sound-absorbing panel 202 follows the guidance of the N-shaped channel and adapts to changes, thereby allowing the sound waves from the N-shaped channel to be directed to the second sound-absorbing panel 202 to the greatest extent.

[0044] Example 2: Based on Example 1, Figure 8 and Figure 9 As shown, it also includes fixed guide rails 301 symmetrically distributed along the front and back of the connecting shell 102, and there are four fixed guide rails 301 in total. The fixed guide rails 301 are fixedly connected to the inner wall of the connecting shell 102, and the fixed guide rails 301 are tilted toward the lower left. A sliding plate 302 is slidably connected between the fixed guide rails 301 on the same side laterally, and the bottom of the sliding plate 302 is slidably connected to the top of the lifting frame 108, and a second connecting rod 303 is rotatably connected between the first rotating plate 109 on the top side and the adjacent sliding plate 302.

[0045] Since each group of three first rotating plates 109 are connected by a hinge axis, it means that these connection points allow each first rotating plate 109 to swing left and right within a certain range. Each first rotating plate 109 has a relatively high degree of freedom of rotation. The influence of wind may cause the first rotating plate 109 to swing back and forth and generate noise. To avoid this influence, each first rotating plate 109 is locked and fixed in the horizontal direction through each second connecting rod 303. The reason why this structure can be locked in the horizontal direction is as follows: when the cylinder 106 is closed, its telescopic rod is fixed, so that the lifting frame 108 is stationary relative to the fixed guide rail 301. Due to the limiting effect of the fixed guide rail 301, even if there is an external force, the sliding plate 302 cannot slide left and right relative to the lifting frame 108, so that the second connecting rod 303 cannot swing, and the first rotating plate 109 can be locked and fixed in the left and right directions.

[0046] This structure does not affect the angular adjustment of the first rotating plate 109 in the longitudinal direction. The specific reasons are as follows: when the cylinder 106 is turned on, its telescopic rod can be extended and retracted in the up and down directions. At this time, under the push and pull force of the cylinder 106, the lifting frame 108 can move up and down relative to the fixed guide rail 301, and the sliding plate 302 adaptively slides along the fixed guide rail 301, and at the same time slides left and right relative to the lifting frame 108, so that the second connecting rod 303 can swing, and then the first rotating plate 109 can swing in the up and down directions.

[0047] Example 3: Based on Example 2, Figure 10 and Figure 11 As shown, the device further includes a fixed shell 401 symmetrically distributed along the front and rear sides of the outer shell 101. The fixed shell 401 is fixed to the lower side of the outer shell 101. A third sound-absorbing panel 402 is fixed to the lower side of the fixed shell 401. A longitudinally distributed V-shaped channel is opened in the fixed shell 401. Each V-shaped channel of the fixed shell 401 is fixed with a guide sound-absorbing panel 403 symmetrically distributed along the front and rear sides of the V-shaped channel.

[0048] When the external air enters through the air inlet below, it passes through the third sound absorbing panel 402 and the guide sound absorbing panel 403, thereby reducing the noise at the air inlet and enhancing the noise reduction effect.

[0049] like Figures 12 to 14 As shown, it also includes a guide frame 501, which is fixedly connected to the telescopic rod of the cylinder 106 on the right side. The fixed shell 401 is connected to the sliding frame 502 in a sliding manner in the up and down directions on the side close to the guide frame 501. A movable groove is provided on the lower side of the guide frame 501. The guide frame 501 is movably connected to the sliding frame 502 through the movable groove. The fixed shell 401 is connected to the side close to the sliding frame 502 with three second rotating plates 503 evenly distributed in the longitudinal direction, forming a "shutter" structure. The second rotating plate 503 is rotatably connected to the adjacent sliding frame 502.

[0050] In winter, in order to reduce the entry of cold air, it is necessary to control the telescopic rod of the cylinder 106 to shorten downward. At this time, the telescopic rod of the cylinder 106 drives the sliding frame 502 to descend through the guide frame 501, thereby driving the second rotating plate 503 to rotate ninety degrees, so that all the second rotating plates 503 are in a vertical state, which can reduce the air inlet.

[0051] In summer, in order to increase the ventilation and heat dissipation effect, it is necessary to control the telescopic rod of the cylinder 106 to extend upward. At this time, the telescopic rod of the cylinder 106 drives the sliding frame 502 to rise through the guide frame 501, thereby driving the second rotating plate 503 to rotate ninety degrees in the opposite direction, so that all the second rotating plates 503 are in a horizontal state, thereby increasing the air inlet.

[0052] The above is a detailed introduction to the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A transformer with a noise reduction function, comprising a housing (101), wherein an air outlet and an air inlet of the housing (101) are respectively arranged on upper and lower sides, a connecting shell (102) is fixedly connected to the top of the housing (101), a plurality of transformer bodies (104) are arranged inside the housing (101), and a radiator (105) for dissipating heat from the transformer bodies (104) is arranged inside the housing (101), characterized in that: The shell (101) is fixedly connected to a cylinder (106) symmetrically distributed along the shell (101), and a fixing frame (107) is fixedly connected to the side of the shell (101) near the air outlet. The connecting shell (102) is slidably connected to a lifting frame (108), and the telescopic rod of the cylinder (106) is fixedly connected to the lifting frame (108). A first rotating plate (109) uniformly distributed laterally is rotatably connected between the lifting frame (108) and the fixing frame (107). At least three rotatably connected first rotating plates (109) form a group, and two adjacent first rotating plates (109) form a V shape. A first sound absorbing plate (110) is fixedly connected to the middle of each first rotating plate (109).

2. The transformer with noise reduction function according to claim 1, characterized in that: It also includes a filter screen (103), which is fixed to a side of the connecting shell (102) close to the air outlet.

3. The transformer with noise reduction function according to claim 2, characterized in that: It also includes a plurality of soft sound-absorbing pads (111), and the plurality of sound-absorbing pads (111) are respectively arranged at the hinge shafts of adjacent first rotating plates (109).

4. The transformer with noise reduction function according to claim 3, characterized in that: It also includes a first connecting rod (201), the first connecting rod (201) is rotatably connected to the lifting frame (108), and a second sound absorbing plate (202) is rotatably connected between the first connecting rod (201) and the inner wall of the connecting shell (102).

5. The transformer with noise reduction function according to claim 4, characterized in that: It also includes fixed guide rails (301) symmetrically distributed along the connecting shell (102), the fixed guide rails (301) are fixedly connected to the inner wall of the connecting shell (102), the fixed guide rails (301) are tilted toward one side, and a sliding plate (302) is slidably connected between the fixed guide rails (301) on the same side in the transverse direction, the sliding plate (302) is slidably connected to the lifting frame (108), and a second connecting rod (303) is rotatably connected between the first rotating plate (109) on the top side and the adjacent sliding plate (302).

6. The transformer with noise reduction function according to claim 5, characterized in that: It also includes a fixed shell (401) symmetrically distributed along the outer shell (101), the fixed shell (401) being fixedly connected to a side of the outer shell (101) close to the air inlet, and a third sound absorbing panel (402) being fixedly connected to the side of the fixed shell (401) close to the air inlet.

7. The transformer with noise reduction function according to claim 6, characterized in that: A longitudinally distributed V-shaped channel is provided in the fixed shell (401), and each V-shaped channel of the fixed shell (401) is fixedly connected with a flow guide and sound absorbing plate (403) symmetrically distributed along the V-shaped channel.

8. The transformer with noise reduction function according to claim 7, characterized in that: The invention also includes a guide frame (501), wherein the guide frame (501) is fixedly connected to the telescopic rod of the cylinder (106) on one side, and the fixed shell (401) is slidably connected to a sliding frame (502) on a side close to the guide frame (501), and a movable groove is opened on a side of the guide frame (501) close to the sliding frame (502), and the guide frame (501) is movably connected to the sliding frame (502) through the movable groove, and a second rotating plate (503) uniformly distributed in the longitudinal direction is rotatably connected to the side of the fixed shell (401) close to the sliding frame (502), and the second rotating plate (503) is rotatably connected to the adjacent sliding frame (502).

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