CN214254031U

CN214254031U - Vibration and noise reduction device

Info

Publication number: CN214254031U
Application number: CN202022920596.0U
Authority: CN
Inventors: 庄孟文
Original assignee: Changzhou Ynen Electrical Co ltd
Current assignee: Changzhou Ynen Electrical Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-09-21
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to a vibration damping and noise reducing device which is arranged at the bottom of a transformer and comprises a first vibration damping component and a second vibration damping component; the first vibration reduction assembly is provided with a cavity, the second vibration reduction assembly is arranged in the cavity of the first vibration reduction assembly, and the first vibration reduction assembly and the second vibration reduction assembly form a sleeving structure; the self resonance frequency of the first vibration reduction assembly and the second vibration reduction assembly is not overlapped with the frequency generated when the transformer operates. The utility model discloses install in the transformer bottom, realized double-deck vibration isolation sound insulation, reduced high, low frequency vibration and structural noise by a wide margin, can improve the safety and stability nature of transformer greatly to effectively reduce the radiation noise and the vibration transmission that the transformer arouses.

Description

Vibration and noise reduction device

Technical Field

The utility model belongs to the technical field of the transformer technique of making an uproar and specifically relates to a device of making an uproar falls in damping.

Background

Along with the rapid development of national economy of China, the urbanization process is aggravated, the demand on electric power is larger and larger, and particularly, the implementation of an electric power transformer substation or a power distribution room exists as an important infrastructure implementation. Due to the demand of urban land planning, these power distribution rooms are often placed near urban office buildings or residential buildings, and even directly on the first floor or basement of an office building or residential building. Environmental vibration and noise pollution caused by the operation of a transformer in a power distribution room often affect nearby residents, and inconvenience and health are brought to the normal life of an owner.

When the transformer in the cell power distribution room operates, besides the external radiation noise (especially low-frequency noise) directly transmitted through air, the transformer equipment body can generate magnetic vibration (especially high-frequency vibration). This vibration on the one hand stimulates equipment panel vibration and then produces the secondary noise, on the other hand vibration can pass to the basis through the rack, and pass through structural component such as floor, wall post with the form of elastic wave and reach room wall structure, and arouse room structure microvibration, and produce structural noise, see from the appearance that electrical equipment such as transformer mostly influences the surrounding environment with the form of noise interference, usually pay close attention to the airborne of noise to its improvement, many distribution rooms adopt inhale, the sound insulation material is handled, but its effect is often not obvious in the engineering practice. In fact, the environmental vibration and noise caused by the cell transformer tend to be interdependent, and the equipment vibration is one of its noise sources and noise propagation paths.

At present, the technologies for vibration reduction and noise reduction of the transformer mainly comprise passive control, active control and vibration suppression methods. Passive control mainly is to take sound insulation measures on the propagation path of vibration and noise, installation sound insulation equipment around the transformer, if install the transformer with its with external isolated box in, weaken the propagation of vibration and noise through means such as installing sound-proof housing and acoustic absorbent additional, but because box simple structure among the prior art, the noise that produces when unable absorption transformer operation, and there is mostly to original structural change and the not good defect of effect in sound-proof housing and acoustic absorbent's installation. The active control mainly comprises the step of installing a silencing device on a vibration and noise propagation path, such as a step of adding a spring base below a transformer mounting base to reduce vibration and noise. The vibration suppression law is to reduce transformer noise fundamentally by suppressing the vibration of the iron core. At present, researchers carry out vibration reduction and noise reduction through a transformer iron core and the like, but the vibration suppression method cannot be directly applied to actual vibration reduction and noise reduction requirements due to the fact that the original design of a transformer needs to be considered.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provided is a vibration and noise reduction device which can effectively reduce structural noise caused by vibration of a transformer.

The utility model provides a technical scheme that its technical problem adopted is: a vibration and noise reduction device is arranged at the bottom of a transformer and comprises a first vibration reduction assembly and a second vibration reduction assembly; the first vibration reduction assembly is provided with a cavity, the second vibration reduction assembly is arranged in the cavity of the first vibration reduction assembly, and the first vibration reduction assembly and the second vibration reduction assembly form a sleeving structure; the self resonance frequency of the first vibration reduction assembly and the second vibration reduction assembly is not overlapped with the frequency generated when the transformer operates.

Furthermore, the first vibration damping assembly of the present invention comprises a first cup-shaped cylinder, a first vibration damping spring, a first iron plate and a first vibration damping layer; the first iron plate is adhered to the first vibration reduction layer through an adhesive, the first vibration reduction spring is welded on the first iron plate, and the first cup-shaped cylinder is embedded in the first vibration reduction spring.

Still further, the second vibration damping assembly of the present invention comprises a second cup-shaped cylinder, a second vibration damping spring, a second iron plate, and a second vibration damping layer; the second vibration reduction layer is arranged in the first cup-shaped cylinder, the second iron plate is adhered to the second vibration reduction layer through an adhesive, the second vibration reduction spring is welded on the second iron plate, and the second cup-shaped cylinder is embedded in the second vibration reduction spring.

Still further say, first damping layer and second damping layer be rubber pad or rubber block.

Still further, the distance between the first cup-shaped cylinder and the first iron plate is greater than or equal to 20 mm.

The utility model has the advantages that the defects in the background art are solved,

the vibration isolation and sound insulation structure is arranged at the bottom of the transformer, so that double-layer vibration isolation and sound insulation are realized, high-frequency and low-frequency vibration and structural noise are greatly reduced, the safety and stability of the transformer can be greatly improved, and the radiation noise and vibration transmission caused by the transformer are effectively reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: 1-a first damping layer; 2-a first iron plate; 3-a first damping spring; 4-a first cup-shaped cylinder; 5-a second damping layer; 6-a second iron plate; 7-a second damping spring; 8-second cup-shaped cylinder.

Detailed Description

The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, the vibration and noise reduction device is installed at the bottom of a transformer, and comprises a first vibration reduction layer 1, a first iron plate 2, a first vibration reduction spring 3, a first cup-shaped cylinder 4, a second vibration reduction layer 5, a second iron plate 6, a second vibration reduction spring 7 and a second cup-shaped cylinder 8, wherein an operator sets a basic embedded part corresponding to the first vibration reduction layer 1 on the ground to fix a basic part of the vibration reduction device; the first iron plate 2 is adhered to the first vibration damping layer 1 by an adhesive; the first vibration reduction spring 3 is welded on the first iron plate 2; the first cup-shaped cylinder 4 is embedded in the first damping spring 3; the distance between the first cup-shaped cylinder 4 and the first iron plate 2 is greater than or equal to 20mm, so that mechanical vibration can be effectively reduced; the second vibration reduction layer 5 is arranged in the first cup-shaped cylinder 4, the second vibration reduction layer 5 is a rubber pad, and the rubber pad plays a role in buffering and vibration reduction and enables the second vibration reduction layer 5 to be more tightly and firmly matched with the first cup-shaped cylinder 4; the second iron plate 6 is adhered to the second vibration damping layer 5 by an adhesive; the second damping spring 7 is welded on the second iron plate 6; the second cup-shaped cylinder 8 is embedded in the second damping spring 7; the self resonance frequency of the first damping spring 3 and the second damping spring 7 keeps a certain difference with the frequency generated when the transformer operates, so that the phenomenon that the resonance is caused by the overlapping of the self frequency of the damping springs when the transformer operates to cause larger noise is avoided.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A vibration and noise reduction device is characterized in that: the vibration reduction device is arranged at the bottom of the transformer and comprises a first vibration reduction assembly and a second vibration reduction assembly; the first vibration reduction assembly is provided with a cavity, the second vibration reduction assembly is arranged in the cavity of the first vibration reduction assembly, and the first vibration reduction assembly and the second vibration reduction assembly form a sleeving structure; the self resonance frequency of the first vibration reduction assembly and the second vibration reduction assembly is not overlapped with the frequency generated when the transformer operates.

2. A vibration and noise reducing apparatus as defined in claim 1, wherein: the first vibration reduction assembly comprises a first cup-shaped cylinder, a first vibration reduction spring, a first iron plate and a first vibration reduction layer; the first iron plate is adhered to the first vibration reduction layer through an adhesive, the first vibration reduction spring is welded on the first iron plate, and the first cup-shaped cylinder is embedded in the first vibration reduction spring.

3. A vibration and noise reducing apparatus as defined in claim 2, wherein: the second vibration reduction assembly comprises a second cup-shaped cylinder, a second vibration reduction spring, a second iron plate and a second vibration reduction layer; the second vibration reduction layer is arranged in the first cup-shaped cylinder, the second iron plate is adhered to the second vibration reduction layer through an adhesive, the second vibration reduction spring is welded on the second iron plate, and the second cup-shaped cylinder is embedded in the second vibration reduction spring.

4. A vibration and noise reducing apparatus as defined in claim 3, wherein: the first vibration reduction layer and the second vibration reduction layer are rubber pads or rubber blocks.

5. A vibration and noise reducing apparatus as defined in claim 2, wherein: the distance between the first cup-shaped cylinder and the first iron plate is more than or equal to 20 mm.