Energy-saving comprehensive noise reduction fan pipeline and transformation method

Abstract

The invention provides an energy-saving comprehensive noise reduction fan pipeline and a transformation method. The energy-saving comprehensive noise reduction fan pipeline comprises a fan, an air inlet pipeline and an air supply pipeline, wherein an air inlet and an air outlet of the fan are connected with the air inlet pipeline and the air supply pipeline respectively, and the air supply pipeline at least comprises one bent pipe. The energy-saving comprehensive noise reduction fan pipeline is characterized in that an expansion silencer is installed at the inlet of the air inlet pipeline andused for reducing noise of the air inlet pipeline and ventilation resistance of airflow; interference silencing flow deflectors are arranged between the air inlet pipeline and the inlet of the fan, between the air supply pipeline and the outlet of the fan and in the bent pipe respectively and used for eliminating and weakening vortexes. The flow field characteristics can be optimized and improvedthrough the interference silencing flow deflectors, pressure loss is reduced, and vibration and impact effects induced by a pulsating flow field are reduced. Expansion silencing and interference silencing are combined, the design of the pipeline is improved, the pipeline has certain silencing capacity, the expansion silencer is adopted at the inlet, and noise caused by vertical air intake is reduced.

Description

technical field [0001] The invention relates to the field of heat exchange systems of smelters, oil refineries, and coal-fired power plants, or the field of ventilation systems of air conditioners, or the field of other air supply systems, or the field of wind energy energy saving and noise reduction, and particularly relates to an energy-saving comprehensive noise reduction fan pipe and a transformation method. Background technique [0002] In smelters, oil refineries, coal-fired power plants, heat exchange systems, air-conditioning systems and other ventilation systems, the noise generated by the fan operation is partly transmitted to the surrounding space through the fan and pipe wall, and most of the noise is transmitted along the pipeline system. It radiates to the outside space through the air inlet of the duct. At the same time, the secondary noise generated by the air flow in the pipeline system is also radiated to the surrounding space through the above two ways. T...

AI Technical Summary

Problems solved by technology

Although this method can reduce noise and save energy, since the noise reduction of the fan itself is not performed, the anti-sound noise reduction effect of the air inlet pipe is limited, and it cannot meet the requirements of Article 5 of the "Noise Hygienic Standards for Industrial Enterprises" regarding the production workshops and The noise standard of the workplace is 85 decibels

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