Modeling the effect of sound insulation on reducing the sound pressure level in the gas pressure reducing station

Among all occupational pollutants, noises have the highest levels of emissions, and there are almost every industry. Noise interferes with conversations and prevents hearing loss as one of the most common stresses and causes the occurrence of cardiovascular problems and, more importantly, reduces hearing in exposed individuals. In the City Gas Station(CGS), gas pressure is reduced from ۷۰۰ psi to ۲۵۰ psi, and at Town Board stations(TBS), the gas pressure is reduced from ۲۳۰psi-۲۵۰psi to ۶۰psi.In gas pressure reduction stations, due to the equipment installed and the geographic location of the station, in order to maintain the safety and health of the station, appropriate measures are needed to measure noise and reduce noise. Due to the high noise pollution, the CGS and TBS gas pressure reduction stations are compared. Therefore, in this research, an appropriate modeling with Matlab and a mathematical program to analyze the intensity level of sound at different intervals from the source of sound and various frequencies and different sound power in a non-insulated state and in insulated mode, by changing the surface density of the insulator, it examines the effect of reducing the level of sound intensity. The most important results are: ۱. Reduces the intensity of the sound by increasing the distance from the sound source. However, under operating conditions, the size of the valve=۶ " , Frequency = ۵۰۰HZ, Sound pressure = ۲Watt,Insulation density=۱۰۰kg/m۲ , the existence of an insulator with a surface density of ۱۰۰ kg/m۲ would reduce the ۱۲db level of sound level at a level between ۶۶db to ۱۰۶db became. ۲-Voice intensity increases with increasing sound power at identical intervals from the sound source. However, for operating conditions, the Size of valve=۶", Frequency=۵۰۰HZ, Distance=۲۵m, Insulation density=۱۰۰kg /m۲ with sound power change from watt۱ to ۲۰watt Sound level levels from ۶db to ۱۱db for safe and no Insulation changes. ۳. As the distance from the sound source increases, the intensity of the sound decreases with decreasing frequency. However, under operating conditions, the size of the valve=۶ ", Frequency= ۴۰۰HZ, Sound pressure=۲Watt, Insulation density = ۱۰۰kg/m۲. Sound intensity level An insulator with a surface density of ۱۰۰kg/m۲ at a level between ۶۶db and ۱۰۶db reduces from about ۲۰db to ۲۶ db, respectively. ۴. With increasing insulating surface density, the level of sound balance decreases at identical intervals. However, under operating conditions, the size of the valve=۶", Frequency=۵۰۰HZ, Sound pressure = ۲Watt, Distance of source=۲۵m. Insulation with a surface density of ۱kg/m۲ reduces about ۷db. Sound and sound level levels with a surface density of ۱۰۰kg/m۲ will reduce the sound power level by about ۲۰d

کلیدواژه ها:

Gas Pressure Reducing Station ، Sound Pollution ، Sound Distribution modeling with Matlab ، Sound Insulation