CN218826592U

CN218826592U - Low-noise dry-type transformer

Info

Publication number: CN218826592U
Application number: CN202223144169.3U
Authority: CN
Inventors: 王磊; 张水桥; 石煚; 毛家立
Original assignee: Hubei Huayaoda Electrical Equipment Co ltd
Current assignee: Hubei Huayaoda Electrical Equipment Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-07
Anticipated expiration: 2032-11-25

Abstract

The utility model relates to the technical field of dry-type transformers, and discloses a low-noise dry-type transformer, which comprises a noise reduction shell and a dry-type transformer body, wherein the dry-type transformer body is arranged inside the noise reduction shell; the ventilation noise reduction barrel is characterized in that a plurality of ventilation noise reduction barrels are arranged on two sides of the noise reduction shell respectively, and each ventilation noise reduction barrel comprises a cross-shaped separation blade and a sound absorption barrel body which play a role in noise reduction. This dry-type transformer of low noise, the cross separation blade with inhale the central department of sound barrel and fill and take a plurality of spaces to inhale the sound material layer, inhale sound material layer place cavity and cross separation blade barrel chamber intercommunication, process in the sound barrel is inhaled to the air current follow, the sound of production can spread into the cross separation blade and inhale the sound barrel surface time, sound energy partly is reflected, another part pierces through the material and inhales sound material layer center space, constantly rub, become heat energy by the sound energy conversion, the sound energy is lost, sound is absorbed by the material promptly, play the effect of making an uproar.

Description

Low-noise dry-type transformer

Technical Field

The utility model relates to a dry-type transformer technical field specifically is a dry-type transformer of low noise.

Background

The prior dry type transformer at home and abroad is mainly of two types of epoxy resin encapsulated type and open type, the running noise of the epoxy resin dry type transformer is basically about 65-70 dB, the noise of the open roll iron core transformer is related to the winding tightness, the winding tightness can be below 55 dB (the process requirement is higher), and the winding tightness can be above 70 dB.

Dry-type transformers are installed indoors, such as residential areas, office buildings, manned substations, etc., where relatively quiet environments are required to provide people with comfortable rest and quiet workplaces. And the continuous noise of about 70dB can cause stress to the brain, so that people feel nervous and uneasy and are difficult to fall asleep, and the people can also be distracted and can not be put into operation in full body and mind, thereby possibly influencing the physical and mental health of people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dry-type transformer of low noise to solve the problem that proposes among the above-mentioned background art.

The embodiment of the application adopts the following technical scheme:

a low-noise dry-type transformer comprises a noise reduction shell and a dry-type transformer body, wherein the dry-type transformer body is arranged inside the noise reduction shell;

the ventilation noise reduction cylinders are respectively arranged at two sides of the noise reduction shell and comprise cross-shaped separation blades and sound absorption cylinders, and the cross-shaped separation blades play a role in noise reduction;

the ventilation and noise reduction barrel further comprises an outer barrel body and a protective net which play a role in protection.

Further, the noise reduction shell comprises a moisture-proof board layer, a first sound-proof layer, a second sound-proof layer and a connecting hole.

Furthermore, the inner surface of the moisture-proof board layer is fixed with the outer surface of the first sound-proof layer, and the inner surface of the first sound-proof layer is fixed with the outer surface of the second sound-proof layer.

Furthermore, the dampproofing sheet layer is located outermost, and a plurality of connecting holes are seted up respectively in the both sides of making an uproar casing of falling.

Furthermore, the ventilation and noise reduction barrel further comprises a connecting ring, and an external thread is arranged on the connecting ring.

Furthermore, the top of the dry-type transformer body is fixed with the inner top wall of the noise reduction shell, and the bottom of the dry-type transformer body is fixed with the inner bottom wall of the noise reduction shell.

Furthermore, the cross separation blade is fixed at the internal surface of inhaling the sound barrel, has seted up a plurality of through-holes on the cross separation blade.

Furthermore, the outer surface of the sound-absorbing cylinder body is fixed with the inner surface of the outer cylinder body, and a protective net is fixed inside the sound-absorbing cylinder body.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

one of them, when using, the cross separation blade with inhale sound barrel center department fill have take a plurality of gaps to inhale the sound material layer, inhale sound material layer place cavity and cross separation blade barrel chamber intercommunication, process in the sound barrel is inhaled to the air current follow, the sound of production can spread into the cross separation blade and inhale the sound barrel surface time, acoustic energy partly is reflected, another part pierces through the material and inhales sound material layer center space, constantly rubs, becomes heat energy by acoustic energy conversion, acoustic energy is lost, sound is absorbed by the material promptly, play the effect of making an uproar.

When the dry-type transformer is used, the damping shock absorber can play a role in shock absorption on the dry-type transformer body, and can ensure that the shock degree generated by the dry-type transformer body during working can be reduced, so that the noise generated during shock is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic view of the internal structure of the low-noise dry-type transformer of the present invention;

fig. 2 is a schematic perspective view of the outer cylinder of the low-noise dry-type transformer of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of the outer cylinder of the low-noise dry-type transformer of the present invention;

fig. 4 is a schematic cross-sectional structure view of the noise reduction casing of the low-noise dry-type transformer of the present invention.

In the figure: 1. a noise reduction housing; 11. a moisture-proof board layer; 12. a first sound insulating layer; 13. a second sound insulating layer; 14. connecting holes; 2. a dry-type transformer body; 3. a damping shock absorber; 4. a support plate; 5. a ventilation noise reduction cylinder; 51. an outer cylinder; 52. a connecting ring; 53. a cross baffle plate; 54. a protective net; 55. a sound-absorbing cylinder; 56. and a through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Example 1: referring to fig. 1-4, a low noise dry transformer; the noise reduction cabinet comprises a noise reduction casing 1 and a dry-type transformer body 2, wherein the front side of the noise reduction casing 1 is hinged with a switchable cabinet door through a hinge shaft, the dry-type transformer body 2 is arranged inside the noise reduction casing 1, four damping shock absorbers 3 are fixed at the bottom of the noise reduction casing 1, a supporting plate 4 is fixed at the bottom of each damping shock absorber 3, and each damping shock absorber 3 can play a role in damping the dry-type transformer body 2, so that the vibration degree of the dry-type transformer body 2 generated during working can be reduced, and the noise generated during vibration is reduced;

the ventilation noise reduction cylinders 5 are respectively arranged at two sides of the noise reduction shell 1, and each ventilation noise reduction cylinder 5 comprises a cross-shaped baffle plate 53 and a sound absorption cylinder body 55 which play a role in noise reduction;

the ventilation and noise reduction cylinder 5 further comprises an outer cylinder body 51 and a protective net 54 which play a role of protection.

The noise reduction housing 1 includes a moisture-proof sheet layer 11, a first soundproof layer 12, a second soundproof layer 13, and a connection hole 14.

The inner surface of the moisture-proof sheet layer 11 is fixed to the outer surface of the first soundproof layer 12, and the inner surface of the first soundproof layer 12 is fixed to the outer surface of the second soundproof layer 13.

The first sound insulating layer 12 is made of a heat insulating cotton material, and the first sound insulating layer 12 is made of a wood sound-absorbing board material.

The dampproofing sheet layer 11 is located the outmost, and a plurality of connecting holes 14 are seted up respectively in the both sides of making an uproar casing 1 of falling, and the quantity of connecting hole 14 is four, and the internal thread that goes up the external screw thread looks adaptation with the clamping ring 52 is seted up to the internal surface of connecting hole 14.

The top of dry-type transformer body 2 is fixed with the interior roof of making an uproar casing 1 that falls, and the bottom of dry-type transformer body 2 is fixed with the interior roof of making an uproar casing 1 that falls.

The cross baffle 53 is fixed on the inner surface of the sound-absorbing cylinder body 55, a plurality of through holes 56 are formed in the cross baffle 53, the ventilation and noise reduction cylinder 5 further comprises a connecting ring 52, an external thread is formed in the connecting ring 52, the connecting ring 52 is fixed on the sound-absorbing cylinder body 55, and the sound-absorbing cylinder body 55 can be connected into the connecting hole 14 in the noise reduction shell body 1 through the connecting ring 52 in a threaded mode.

The outer surface of the sound absorbing cylinder 55 is fixed to the inner surface of the outer cylinder 51, and a protective net 54 is fixed to the inside of the sound absorbing cylinder 55.

The working principle is as follows: cross separation blade 53 and inhale sound barrel 55 center department and fill and take a plurality of spaces sound absorbing material layer, sound absorbing material layer place cavity and cross separation blade 53 barrel chamber intercommunication, pass through in sound barrel 55 is inhaled to the air current, when the sound of production can spread into cross separation blade 53 and inhale sound barrel 55 surface, some is reflected by the acoustic energy, another part pierces through the material and carries out in the sound absorbing material layer center space, continuous friction, change into heat energy by the acoustic energy, the acoustic energy is lost, the sound is absorbed by the material promptly, play the effect of making an uproar that falls.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A low-noise dry-type transformer comprises a noise reduction shell (1) and a dry-type transformer body (2), and is characterized in that the dry-type transformer body (2) is arranged inside the noise reduction shell (1);

the noise reduction device comprises ventilation noise reduction cylinders (5), wherein a plurality of ventilation noise reduction cylinders (5) are respectively arranged at two sides of a noise reduction shell (1), and each ventilation noise reduction cylinder (5) comprises a cross-shaped baffle plate (53) and a sound absorption cylinder body (55) which play a noise reduction role;

the ventilation and noise reduction barrel (5) also comprises an outer barrel body (51) and a protective net (54) which play a protective role.

2. Low noise dry transformer according to claim 1, whereas the noise reducing housing (1) comprises a moisture proof sheet layer (11), a first insulation layer (12), a second insulation layer (13) and connection holes (14).

3. A low noise dry transformer according to claim 2, wherein the inner surface of the moisture proof sheet layer (11) is fixed to the outer surface of the first soundproof layer (12), and the inner surface of the first soundproof layer (12) is fixed to the outer surface of the second soundproof layer (13).

4. A low-noise dry transformer according to claim 2, wherein the moisture-proof plate layer (11) is positioned at the outermost layer, and a plurality of connection holes (14) are opened at both sides of the noise reduction case (1), respectively.

5. A low noise dry transformer according to claim 1, wherein the ventilation noise reduction cylinder (5) further comprises a connection ring (52), and the connection ring (52) is externally threaded.

6. Low noise dry transformer according to claim 1, characterized in that the top of the dry transformer body (2) is fixed to the inner top wall of the noise reduction housing (1) and the bottom of the dry transformer body (2) is fixed to the inner bottom wall of the noise reduction housing (1).

7. A low noise dry transformer as claimed in claim 1, wherein said cross-shaped shielding plate (53) is fixed to the inner surface of the sound-absorbing cylinder (55), and the cross-shaped shielding plate (53) is formed with a plurality of through holes (56).

8. A low noise dry transformer according to claim 1, wherein the outer surface of the sound-absorbing cylinder (55) is fixed to the inner surface of the outer cylinder (51), and a protective mesh (54) is fixed to the inside of the sound-absorbing cylinder (55).