Noise reduction type novel dry-type transformer

Abstract

The utility model discloses a noise reduction type novel dry-type transformer, which relates to the technical field of transformer noise reduction, and comprises a dry-type transformer main machine shell, a dry-type transformer assembly is arranged in the dry-type transformer main machine shell, and composite damping plates are fixed on the inner wall of the dry-type transformer main machine shell. Universal brake wheels are fixed to the four corners of the bottom of the dry-type transformer host shell, ventilation openings are formed in the two sides of the dry-type transformer host shell, and side heat dissipation frames are installed on the two sides of the dry-type transformer host shell. During working, the composite damping plate is installed in the main machine shell of the dry-type transformer, noise generated during working of a dry-type transformer assembly is absorbed and blocked through the composite damping plate, noise transmission is effectively reduced, when the noise is transmitted to the outside from the ventilation structure, noise transmission is reduced through a noise reduction structure in the ventilation barrel, and when the noise is transmitted out through the side heat dissipation frame, noise reduction is achieved. And noise is absorbed and blocked through the side anti-noise structures, noise transmission is effectively reduced, and therefore noise pollution to the outside is reduced when the equipment works.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer noise reduction, in particular to a noise reduction type new dry-type transformer. Background Technique

[0002] A dry-type transformer refers to a transformer in which the iron core and windings are not immersed in insulating oil, and its working principle is mainly to convert voltage and current through electromagnetic induction. When current flows into the transformer from one end, it generates a magnetic field in the iron core, and this magnetic field induces current in another winding, thereby causing the voltage to change at the other end. The change in voltage is related to the turns ratio between the windings, and the voltage can be changed by changing the number of turns between the windings;

[0003] At present, in order to reduce the noise generated by the operation of the dry-type transformer, generally, a sound insulation board is added on the basis of the dry-type transformer shell to reduce the noise generated during operation. The noise is absorbed and blocked by the sound insulation board, greatly reducing the external noise pollution.

[0004] However, in order to improve heat dissipation, a dry-type transformer generally installs a cooling fan at the rear and opens cooling vents on the side, and sound insulation boards are not provided at these positions. Therefore, the noise generated during operation will also be emitted from these positions, resulting in a relatively large noise in some areas. Although some dry-type transformers install sound insulation covers at the side cooling vents, the sound insulation covers are prone to intercept the hot air discharged from the side cooling vents, making it relatively difficult to exhaust the hot air.

[0005] Therefore, it is necessary to design a noise reduction type new dry-type transformer to solve the problem. Content of the Utility Model

[0006] The utility model provides a noise reduction type new dry-type transformer, which solves the above-mentioned technical problems.

[0007] To solve the above technical problems, a noise reduction type new dry-type transformer provided by the utility model includes a dry-type transformer main body shell, a dry-type transformer component is installed inside the dry-type transformer main body shell, and composite damping plates are fixed on the inner walls of the dry-type transformer main body shell. Universal brake wheels are fixed at the four corners of the bottom of the dry-type transformer main body shell. Ventilation openings are opened on both sides of the dry-type transformer main body shell, and side heat dissipation frames are installed. Card slots are opened on both sides of the side heat dissipation frames, and side noise prevention structures are clamped through the card slots to contact the dry-type transformer main body shell. A noise reduction ventilation structure is fixedly penetrated through the middle of the back of the dry-type transformer main body shell.

[0008] Preferably, the side noise prevention structure includes a sound insulation frame with a sound insulation board fixed on the inner wall, rubber strips are fixed on both inner side walls of the sound insulation frame, a plurality of air outlet holes are opened at the inner bottom of the sound insulation frame, and a micro fan is installed in each air outlet hole.

[0009] Preferably, the sound insulation frame is clamped into two card slots on the side heat dissipation frame by squeezing with two rubber strips.

[0010] Preferably, the sound insulation board is also made of a composite damping board.

[0011] Preferably, the noise reduction ventilation structure includes a ventilation cylinder fixedly penetrating through the back of the main body shell of the dry-type transformer. A heat dissipation fan is fixedly installed at the front part inside the ventilation cylinder, and a noise reduction cavity is arranged at the rear part inside the ventilation cylinder. A plurality of sound absorption partitions are fixedly staggered on both side walls in the noise reduction cavity. The noise reduction cavity communicates with the inside of the ventilation cylinder, and a metal partition net is fixedly installed at the communication part. A fence is fixedly installed at the outer end of the ventilation cylinder.

[0012] Preferably, the plurality of sound absorption partitions divide the internal space of the noise reduction cavity into a plurality of sound insulation cavities.

[0013] Preferably, a controller is installed inside the main body shell of the dry-type transformer and is electrically connected to an external power supply for power-on, and the controller is electrically controlled and connected to a plurality of micro fans and the heat dissipation fan of the side noise prevention structure.

[0014] Compared with the related technology, a noise reduction type new dry-type transformer provided by the present utility model has the following beneficial effects:

[0015] The present utility model provides that when working, a composite damping board is installed inside the main body shell of the dry-type transformer. The noise generated when the dry-type transformer assembly works is absorbed and blocked by the composite damping board, effectively reducing the noise transmission. When the noise is transmitted from the ventilation structure to the outside, it passes through the sound insulation structure inside the ventilation cylinder, reducing the noise transmission. When the noise passes through the side heat dissipation frame and is transmitted out, the side noise prevention structure absorbs and blocks the noise, also effectively reducing the noise transmission, thereby reducing the noise pollution to the outside when the equipment works.

[0016] The present utility model provides that the hot air output from the side heat dissipation frame is blocked by the sound insulation frame, and is blown outwards by a plurality of micro fans to guide the air inside the sound insulation frame to blow out from a plurality of air outlet holes, thereby ensuring the normal heat dissipation of the dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a noise reduction type new dry-type transformer of the present utility model;

[0018] Figure 2 It is a schematic diagram of the back of a noise reduction type new dry-type transformer of the present utility model;

[0019] Figure 3 It is a schematic diagram of the side noise prevention structure of the present utility model;

[0020] Figure 4 It is an enlarged schematic diagram at position A of the present utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the noise reduction and ventilation structure of the present utility model.

[0022] Reference numerals in the figure: 1. Dry-type transformer main body housing; 2. Universal brake wheel; 3. Side noise prevention structure; 31. Sound insulation frame; 311. Rubber strip; 312. Air outlet hole; 313. Miniature fan; 32. Sound insulation board; 4. Side heat dissipation frame; 41. Card slot; 5. Noise reduction and ventilation structure; 51. Ventilation cylinder; 52. Heat dissipation fan; 53. Noise reduction cavity; 54. Sound absorption partition; 55. Metal mesh; 56. Fence. Specific implementation mode

[0023] Example 1, given by Figures 1-5 A noise reduction type new dry-type transformer includes a dry-type transformer main body housing 1. A dry-type transformer component is installed inside the dry-type transformer main body housing 1, and composite damping plates are fixed on the inner walls of the dry-type transformer main body housing 1. Universal brake wheels 2 are fixed at the four corners of the bottom of the dry-type transformer main body housing 1. Ventilation openings are provided on both sides of the dry-type transformer main body housing 1, and side heat dissipation frames 4 are installed. Card slots 41 are provided on both sides of the side heat dissipation frames 4. A side noise prevention structure 3 is clamped through the card slots 41 and contacts the dry-type transformer main body housing 1. A noise reduction and ventilation structure 5 is fixedly penetrated through the middle of the back surface of the dry-type transformer main body housing 1.

[0024] Specifically, when working, a composite damping plate is installed inside the dry-type transformer main body housing 1. The noise generated when the dry-type transformer component works is absorbed and blocked by the composite damping plate, effectively reducing the noise transmission. When the noise is transmitted from the ventilation structure 5 to the outside, it passes through the sound insulation structure inside the ventilation cylinder 51, reducing the noise transmission. When the noise is transmitted out through the side heat dissipation frame, the side noise prevention structure absorbs and blocks the noise, also effectively reducing the noise transmission, thereby reducing the noise pollution to the outside when the equipment is working.

[0025] In this embodiment, the side noise prevention structure 3 includes a sound insulation frame 31 with a sound insulation board 32 fixed on the inner wall. Rubber strips 311 are fixed on both inner side walls of the sound insulation frame 31. A plurality of air outlet holes 312 are provided at the inner bottom of the sound insulation frame 31, and a miniature fan 313 is installed in each air outlet hole 312.

[0026] Specifically, when the noise is transmitted out through the side heat dissipation frame 4, the noise is absorbed and blocked by the sound insulation board 32 installed inside the sound insulation frame 31, also effectively reducing the noise transmission. And the hot air output from the side heat dissipation frame 4 is blocked by the sound insulation frame 31. The air inside the sound insulation frame 31 is guided by a plurality of miniature fans 313 and blown out from a plurality of air outlet holes 312, thereby ensuring the normal heat dissipation of the dry-type transformer.

[0027] Among them, the material of the sound insulation board 32 is also a composite damping plate; the composite damping sound insulation board integrates multiple functions such as flame retardancy, fire prevention, and sound absorption.

[0028] Among them, the sound insulation frame 31 is clamped into two card slots 41 on the side heat dissipation frame 4 by squeezing with two rubber strips 311.

[0029] Embodiment 2: On the basis of Embodiment 1, the noise reduction and ventilation structure 5 includes a ventilation cylinder 51 fixedly penetrating through the back of the dry-type transformer main body housing 1. A heat dissipation fan 52 is fixedly installed at the front part inside the ventilation cylinder 51. A noise reduction cavity 53 is arranged at the rear part inside the ventilation cylinder 51. A plurality of sound absorption partitions 54 are fixedly arranged on both side walls in the noise reduction cavity 53 in a staggered manner. The noise reduction cavity 53 communicates with the inside of the ventilation cylinder 51, and a metal partition net 55 is fixedly installed at the communication part. A fence 56 is fixedly installed at the outer end of the ventilation cylinder 51. The plurality of sound absorption partitions 54 divide the internal space of the noise reduction cavity 53 into a plurality of sound insulation cavities.

[0030] Specifically, it passes through the inside of the ventilation cylinder 51 and diffuses into the inside of the noise reduction cavity 53. The plurality of sound absorption partitions 54 divide the internal space of the noise reduction cavity 53 into a plurality of sound insulation cavities. When the noise sound waves enter, the propagation path and speed of the sound waves are changed, so as to achieve the purpose of reducing noise.

[0031] In this embodiment, a controller is installed inside the dry-type transformer main body housing 1 and is electrically connected to an external power supply for power on, and the controller is electrically controlled and connected to a plurality of micro fans 313 and the heat dissipation fan 52 of the side noise prevention structure 3; the micro fans 313 and the heat dissipation fan 52 are controlled by the controller to work to assist the device in heat dissipation.

[0032] In this embodiment: The dry-type transformer main body housing is used in combination with a three-phase isolation transformer of model SG-3KVA.

[0033] Working principle:

[0034] Before use, the sound insulation frame 31 is inlaid on the side heat dissipation frame 4. The two rubber strips 311 in the sound insulation frame 31 are in contact with the side heat dissipation frame 4 and are squeezed and deformed and displaced. As the rubber strips 311 enter the card slots 41, the installation of the sound insulation frame 31 is completed;

[0035] Control the micro fan 313 and the cooling fan 52 through the controller. The cooling fan 52 operates to deliver external air into the dry-type transformer housing for heat exchange. The hot air is output from the side heat dissipation frames 4 on both sides. When working, a composite damping plate is installed inside the dry-type transformer main housing 1. The noise generated during the operation of the dry-type transformer components is absorbed and blocked by the composite damping plate, effectively reducing the noise transmission. When the noise spreads from the ventilation structure 5 to the outside, it passes through the inside of the ventilation cylinder 51 and diffuses into the noise reduction cavity 53. Multiple sound-absorbing partitions 54 divide the internal space of the noise reduction cavity 53 into multiple sound absorption chambers. When the noise sound waves enter, the propagation path and speed of the sound waves are changed, thereby achieving the purpose of reducing noise. When the noise spreads out through the side heat dissipation frame 4, the noise is absorbed and blocked by the sound insulation board 32 installed inside the sound insulation frame 31, also effectively reducing the noise transmission. Moreover, the hot air output from the side heat dissipation frame 4 is blocked by the sound insulation frame 31, and multiple micro fans 313 blow air outward to guide the air inside the sound insulation frame 31 to blow out from multiple air outlet holes 312, thereby ensuring the normal heat dissipation of the dry-type transformer.

Claims

1. A novel dry-type transformer with noise reduction, comprising a dry-type transformer main housing (1), characterized in that: A dry-type transformer assembly is installed inside the dry-type transformer mainframe housing (1), and a composite damping plate is fixed to the inner wall of the dry-type transformer mainframe housing (1). Universal brake wheels (2) are fixed at the four corners of the bottom of the dry-type transformer mainframe housing (1). Ventilation openings are provided on both sides of the dry-type transformer mainframe housing (1), and a side heat dissipation frame (4) is installed. A card slot (41) is provided on both sides of the side heat dissipation frame (4), and a side noise prevention structure (3) is connected to the dry-type transformer mainframe housing (1) through the card slot (41) to contact the dry-type transformer mainframe housing (1). A noise reduction ventilation structure (5) is fixed through the middle of the back of the dry-type transformer mainframe housing (1).

2. A noise reduction novel dry-type transformer according to claim 1, characterized in that: The side noise-proof structure (3) comprises a sound insulation frame (31) with a sound insulation board (32) fixed on the inner wall, rubber strips (311) fixed on the inner side walls of the sound insulation frame (31), and a plurality of air outlet holes (312) are provided at the inner bottom of the sound insulation frame (31), and a micro fan (313) is installed in each air outlet hole (312).

3. A noise reduction novel dry-type transformer according to claim 2, characterized in that: The sound insulation frame (31) is squeezed and clamped into two clamping grooves (41) on the side heat dissipation frame (4) through two rubber strips (311).

4. A noise reduction novel dry-type transformer according to claim 2, characterized in that: The sound insulation board (32) is also made of a composite damping board.

5. A noise reduction novel dry-type transformer according to claim 1, characterized in that: The noise reduction ventilation structure (5) comprises a ventilation tube (51) fixedly passing through the back of the main housing (1) of the dry-type transformer, a heat dissipation fan (52) being fixedly disposed at the front of the ventilation tube (51), a noise reduction cavity (53) being disposed at the rear of the ventilation tube (51), a plurality of sound-absorbing baffles (54) being staggeredly fixedly disposed on the two side walls of the noise reduction cavity (53), the noise reduction cavity (53) being connected to the interior of the ventilation tube (51), a metal partition (55) being fixedly disposed at the connection, and a fence (56) being fixedly disposed at the outer end of the ventilation tube (51).

6. A noise reduction novel dry-type transformer according to claim 5, characterized in that: The plurality of sound-absorbing baffles (54) divide the inner space of the noise reduction cavity (53) into a plurality of sound-absorbing cavities.

7. A noise reduction novel dry-type transformer according to claim 1, characterized in that: A controller is installed inside the dry-type transformer main body housing (1) and is electrically connected to an external power source for power supply, and the controller is electrically controlled and connected to a plurality of micro fans (313) and a heat dissipation fan (52) of the side noise protection structure (3).

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