Noise reduction device and noise reduction method for steam pipeline purging

Abstract

The invention provides a noise reduction device and a noise reduction method for steam pipeline purging. High temperature, high pressure and high speed steam is subjected to noise reduction treatmentthrough a sound attenuation module, the sound attenuation module adopts a compressor, a condenser, a filter and a baffle type evaporator to form the refrigeration cycle, then a sound attenuation cavity is cooled, and finally noise reduction is realized. According to the noise reduction structure, the kinetic energy of the high temperature and high pressure steam blown out from the inner part of apipeline to be purged is recovered, and kinetic energy is converted into the mechanical energy of the compressor to realize cooling and noise reduction, meanwhile, the energy of high temperature and high pressure steam is recycled, environmental protection and energy saving are achieved, the cost of noise reduction is reduced, the effect of noise reduction is better and the efficiency of noise reduction is higher; and on the other hand, sound attenuation baffles can be used for blocking the high temperature, high pressure and high speed steam to form the sound attenuation cavity, so that soundwaves are reflected and interfered at a mutational interface of the cross-sectional area, and sound attenuation are achieved.

Description

technical field [0001] The invention relates to the field of environmental protection machinery, in particular to a noise reduction device and a noise reduction method for purging steam pipes. Background technique [0002] There are often a large number of steam pipelines in thermal equipment systems in industries such as petroleum, chemical industry, metallurgy and electric power. In order to ensure the safe operation of such industrial units, the piping system and its accessories must be purged and cleaned with high-pressure steam according to the design requirements before the mechanical and electrical installation or maintenance of the equipment is completed. Use the high-speed airflow to completely remove the industrial waste such as iron scale, welding slag and other sundries in the pipeline. Especially when the purging quality requirements are high, it is necessary to perform repeated purging with high-flow and high-velocity steam. The purging process often produces...

AI Technical Summary

Problems solved by technology

However, due to the diversity and complexity of engineering equipment, these noise reduction and noise reduction devices are often difficult to meet the special requirements of all pipeline purging, and are not universal

In addition, the noise reduction effect is relatively limited, and the emission noise index still cannot meet the requirements of GB12348 "Noise Standards at the Boundary of Industrial Enterprises"

A large number of sound-absorbing materials are used, the cost is high and the process is cumbersome and complicated; the single use of internal acoustic treatment of the structure has limited noise reduction effect, the structure and design of the noise reduction device are more complicated, the manufacturing process is time-consuming and costly; the use of small hole jet water injection Fog cooling and noise reduction, the cooling and noise reduction effects are extremely limited, unable to meet the requirements of national standards

These all limit the wide and efficient application of pipeline purging and noise reduction devices

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