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What are the characteristics of the exhaust pipe muffler

(Summary description) In order to suppress the noise emitted by the high-pressure steam flow, this type of muffler is designed by synthesizing a more reasonable muffler principle.

What are the characteristics of the exhaust pipe muffler

(Summary description) In order to suppress the noise emitted by the high-pressure steam flow, this type of muffler is designed by synthesizing a more reasonable muffler principle.

Information

1. In order to suppress the noise emitted by the high-pressure steam flow, this type of muffler is designed by synthesizing a more reasonable muffler principle. After the gas is controlled once in the muffler, it enters the pressure reducing body and expands the pressure in a large volume, thereby forming a low-pressure airflow and then ejecting. During this process, the internal energy of the vapor flow is partially converted into sound energy of a certain frequency. It is greatly weakened, but the noise is still higher than the standard value due to the deviation of the exhaust gas from the design value and other reasons. To this end, a double-layered sound-blocking cover is designed outside the pressure-reducing body, which is designed according to the spectral characteristics of the residual noise emitted by the pressure-reducing body to effectively absorb the residual noise. When installed as required by the user, the total noise reduction can reach 36~42 decibels.
2. For the safety door of gas discharge and other devices, the exhaust steam should not only avoid excessive dry noise, but also allow the steam flow to be discharged smoothly. For this reason, the common multi-stage throttling and small hole injection noise reduction means It should not be used. This limitation has always been a difficulty in the design of safety door mufflers, and it is also the reason for the poor noise reduction effect of safety door mufflers. The muffler of the safety door of the utility model also adopts the muffler principle of resisting, spraying, and resisting, wherein the large hole is used to expand the capacity to replace the flow control hole with a smaller diameter, and the effect of resisting, spraying, resisting and resisting is strengthened in structure, and achieves ideal noise reduction effect.
4. According to the spectral characteristic data obtained from the actual test of the noise sources at the operating site of various types of fans in the power plant, it is determined in which frequency ranges how much noise reduction is required as the main basis for designing the structure of the sound-absorbing sheet and the fluid channel. Narrow rectangular channels in larger material finishes for enhanced absorption. When the noise source of the fan is at the maximum noise level, there are often more than one spectrum value, and different spectrum bands have different requirements for the noise reduction. For this reason, this product adopts a resistive structure that can eliminate high and medium frequency noise and a resistive structure that can eliminate medium and low frequency noise. area to maximize the noise reduction frequency band to achieve a good noise reduction effect.

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