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Method for controlling structural acoustic transmission on basis of combined type vibration isolation device

A compound, sound control technology, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, shock absorber, etc., can solve the problem of unsatisfactory vibration isolation effect, achieve high vibration isolation efficiency, reduce energy transfer, and efficient structure transfer sound effect

Active Publication Date: 2014-08-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large number of studies have pointed out that the existing simple vibration isolation devices are only very effective for isolation in the low frequency domain, but for high frequency vibration interference above 100 Hz, the vibration isolation effect is not ideal

Method used

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  • Method for controlling structural acoustic transmission on basis of combined type vibration isolation device
  • Method for controlling structural acoustic transmission on basis of combined type vibration isolation device
  • Method for controlling structural acoustic transmission on basis of combined type vibration isolation device

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Embodiment Construction

[0049] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0050] figure 1 is the flow chart of the preferred embodiment of the present invention, figure 2 It is a schematic diagram of a composite vibration isolator according to a preferred embodiment of the present invention, wherein the composite vibration isolator includes a top structural rubber 8, a support panel 1, a spring vibration isolator 2, a damper 3, an intermediate mass 4, and a rubber vibration isolator 5. Base panel 6, bottom structural rubber 7; the rubber vibration isolator 5 is installed on the base panel 6, the intermediate mass block 4 is installed on the rubber vibration isolator 5; the spring vibration isolator 2 and the damper 3 is installed on the i...

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Abstract

The invention discloses a structural sound transmission control method based on a composite vibration isolation device, comprising the following steps: S1: determining the required composite vibration isolation device according to the parameters of the isolated mechanical equipment; S2: vertically installing the isolated mechanical equipment Place it directly on the composite vibration isolation device; S3: adjust the mass of the middle counterweight of the composite vibration isolation device; S4: adjust the natural frequency of the composite vibration isolation device so that it is lower than the structural vibration generated by the isolated mechanical equipment Sound transmission frequency; S5: Fixed isolated mechanical equipment. The present invention uses a composite vibration isolation system to control the propagation of high-frequency structural noise, and a vibration isolation device is installed between the isolated mechanical equipment and the load-bearing foundation, through the performance of the upper and lower layers of vibration isolators, dampers and intermediate counterweights. Parameter matching, through the energy absorption of the intermediate mass and the effective isolation of springs and rubber vibration isolators, the energy transfer of structural noise is reduced, and the structural sound transmission of mechanical vibration equipment is efficiently isolated.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a structural sound transmission control method of a composite vibration isolation device. Background technique [0002] The noise in the power distribution room is mainly the electromagnetic noise and mechanical noise generated when the transformer is running. The electromagnetic noise is mainly caused by the magnetostriction of the silicon steel sheet and the electromagnetic force in the winding, and the mechanical noise is caused by the vibration of the equipment and the operation of the cooling fan. Most of the transformers used in the distribution room of the community are dry-type transformers. The research results at home and abroad show that the noise of dry-type distribution transformers is mainly caused by the magnetostriction of the iron core. Since the change period of magnetostriction is exactly half the cycle of the power supply frequency (the fundamental frequency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F13/04
CPCF16F13/04F16F15/02F16F15/022
Inventor 徐禄文何国军高芳清范晨光孙春平张松涵胡晓锐邹岸新
Owner STATE GRID CORP OF CHINA
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