Sound insulation and noise reduction method and device for MVR energy saving vaporization system

Abstract

The invention discloses a sound insulation and noise reduction method and device for an MVR energy saving vaporization system. A lobed rotor compressor is subjected to sound insulation and noise reduction through a sound insulation cover formed by combining reinforcing ribs, a sound insulation layer, a damping layer and a sound absorption layer, and natural negative pressure heat dissipation is conducted on the sound insulation cover; noise in the sound insulation cover is absorbed through a sound absorption layer of a composite sound absorption and insulation steel plate at first and then secondarily absorbed through a damping layer of the composite sound absorption and insulation steel plate, and after being insulated and weakened, the noise enters a silencer to be subjected to sound attenuation and then is emitted out of a room; a combined heat preservation sound insulation noise reduction material composed of rock wool, a damping material body, a sound-proof felt and an aluminum sheet is applied to a horizontal heat exchanger so that sound reflection can be reduced, that is, reverberation in the sound space can be avoided, and the strength of pipeline vibration radiating outwards is reduced, vibration produced due to the fact that a pipeline is rubbed by gas is inhibited, the situation that a large amount of sound energy is consumed is avoided, and the noise level is decreased; and meanwhile, the influence of inhibiting and weakening resonance and being consistent with response is achieved. According to the sound insulation and noise reduction method and device for the MVR energy saving vaporization system, the noise which is more than three meters away from the device is reduced to 70 dB or less from 110 dB, and plant boundary noise is reduced to 60 dB or less.

Description

technical field [0001] The invention relates to a sound insulation and noise reduction method for an MVR energy-saving evaporation system and equipment thereof, in particular to a vibration and noise reduction method and equipment for a Roots compressor and a horizontal heat exchanger, and the application of sound insulation and noise reduction materials. Background technique [0002] At present, noise has become a major environmental pollution, and the noise environmental problem of working conditions has been paid more and more attention by people. Through the noise test of MVR independent equipment, the main noises are aerodynamic noise, mechanical noise and electromagnetic noise, and the main sources of noise are Roots compressor (fan body, motor) and horizontal heat exchanger pipes. Fan noise mainly includes aerodynamic noise and mechanical noise, and its noise value is generally around 115dB (A); motor noise mainly includes mechanical noise and electromagnetic noise, a...

AI Technical Summary

Problems solved by technology

The MVR energy-saving evaporation system has the following defects: First, the mechanical vibration amplitude of the Roots compressor is too large, causing resonance in the connecting pipeline, resulting in low-frequency noise that travels far; Noise such as valve confluence impact, etc., the noise value can reach 95-102dB(A) within 3m, and people who work in this environment for a long time will cause hearing loss and occupational deafness

Therefore, sound insulation and noise reduction of the MVR energy-saving evaporation system is imperative. If the noise problem cannot be solved, the MVR energy-saving evaporation system will not be able to start operation.

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