Screw Compressor Noise Control Table

Core Index of noise control of screw compressor

screw Compressor often produces medium and high frequency noise in industrial operation, which is mainly caused by rotor engagement, airflow fluctuation and mechanical vibration. Effective control should be based on the sound pressure level (SPL) as the quantitative basis, referring to international standardsISO 3744measure and evaluate the sound power level.

Reference for typical noise reduction standards and limits

• factory boundary environmental noise: implement 《 GB 12348-2008 class II standard, daytime ≤ 60 dB(A), night ≤ 50 dB(A)
• operating Post noise: based on 《 GBZ 2.2-2014 “, 8 hours equivalent sound level ≤ 85 dB(A)
• sound pressure level of equipment body: under no-load/rated working condition, it is recommended to control the sound pressure level at a distance of 1 m70–78 dB(A)interval

practical noise control scheme

comprehensive adoption of four paths of sound absorption, sound insulation, noise elimination and vibration reduction: loading/exhaust muffler; Setting sound insulation cover (including ventilation and heat dissipation design); Foundation installation elasticity anti-vibration pad; Pipe coating damping material; optimize the sound absorption wall and ceiling of the data center. Before the implementation of the plan, on-site noise source identification and spectrum analysis should be carried out to ensure accurate and efficient governance.