Blast Furnace Blower Station Noise Control
Introduction
Noise is a common environmental pollution problem. It has caused great harm to peoples physical and mental health and can cause a series of serious mental illnesses. With the development of the society, the industrial equipments become bigger and heavier, and the noise produced by them increases, which creates a serious environmental pollution. As the equipment of high temperature and high pressure in the industrial production process, the blast furnace blower station produces more obvious noise and causes greater harm to the surrounding environment. Therefore, the introduction of advanced noise control technology is of great significance to reduce the noise of blast furnace blower station and protect the environment.
Noise Control Principle
Noise control is mainly to reduce the noise intensity of sound sources, reduce the transmission of sound from sound source to listener, and form sound insulation layers or enclosures to block the transmission of sound. The noise control of blast furnace blower station includes two parts: direct control and remote control. Direct control refers to the direct installation of sound insulation devices or enclosures close to the sound source to block and reduce the sound emitted by the noise; remote control refers to the construction of sound insulation walls and acoustic ceilings at a distance from the sound source to reduce the direct sound transmission due to the reflection of sound waves, absorb the sound transmitted in the air and dissipate and attenuate the sound.
Noise Control Technology
1. General control measures
General control measures involve controlling noise at the source and blocking transmission. At the noise source, general control measures such as mufflers, ventilation systems and soft starting motors can be used, and at the receiver side, soundproof walls, soundproof partitions and air curtains, etc. are used to block the transmission of sound waves.
2. Intelligent anti-noise control
Intelligent noise control is a technology in which the conditions of noise source and noise receiver are measured and real-time monitoring of noise sources, and a variety of active noise control devices are used to actively control the noise. In the case of semiconductor inverter for blower station, intelligent control of the inverter can be used to actively adjust the current of the fan or the bubble arm to reduce its strength and weaken the noise generated by the system.
3. Active noise control
Active noise control uses electronic acoustic equipment and active vibration control technology to eliminate noise. When the microphone detects the sound wave, the speaker is driven to emit a sound wave whose frequency is opposite to the frequency of the incoming sound wave, resulting in the phenomena of constructive interference and destructive interference, which can make the noise intensity of noise zone reduce.
Conclusion
The noise control measures of blast furnace blower station adopt multi-level control, including sound source noise control, general control and active noise control, which can effectively reduce the noise pollution of the station and improve the quality of production environment. Although the cost of noise control is large, the advantages brought by it are also obvious. In the current environment of rapid industrialization, noise control has become an inevitable part of industrial production, and various noise control technologies are constantly emerging.
