High-pressure silencer

Abstract

The invention discloses a high-pressure silencer suitable for performing noise elimination and noise lowering on discharged high-pressure gas. The high-pressure silencer comprises a shell, noise eliminating bodies and a silencing material; one end of the shell is a cylinder of a spherical end socket which is provided with a gas inlet connection nozzle; the other end of the shell is closed through a hole plate with exhausting holes; the portion, close to one end of the spherical end socket, in the shell is provided with the noise eliminating bodies with the noise eliminating level number being N; one end of the first level of noise eliminating body is connected with the gas inlet connection nozzle; the noise eliminating bodies of all the levels are each provided with a vent hole, are each in a round pipe shape and are arranged in a concentric sleeved manner; and the portions between the inner wall of the shell and the outer sides of the noise eliminating bodies are filled with the silencing material, wherein N is larger than or equal to 4 and is a natural number. High-pressure gas flow enters the noise eliminating bodies from the gas inlet connection nozzle, the volume is gradually increased, the density is continuously decreased, noise is gradually weakened, the weakened gas flow enters the silencing material and is further weakened, and when the gas flow reaches the hole plate, the noise is finally weakened substantially. The high-pressure silencer is good in silencing effect, simple in structure, high in strength, convenient to install and easy to maintain.

Description

technical field [0001] The invention relates to a muffler, in particular to a high-pressure muffler used for noise reduction of discharged high-pressure gas. Background technique [0002] When the compressed gas is directly emptied, the high-speed flow of the gas generates noise, and the maximum noise can reach more than 120dB. High-decibel noise will cause great harm to human health, and even endanger human life in severe cases. GB / T 189.8 "National Occupational Hygiene Standards of the People's Republic of China" stipulates in Part 8 of the measurement of physical factors in the workplace: the exposure limit for workplace noise with a daily exposure time of 8h is 85dB(A). [0003] The deflation and evacuation process of compressed gas is an endothermic process, and there will be frost and ice blockage at the exhaust port. The higher the initial pressure and the higher the dew point in the air, the more serious the ice blockage will be. Therefore, it is not necessary to c...

AI Technical Summary

Problems solved by technology

Therefore, it is not necessary to consider ice blockage when discharging gas under low pressure conditions, but under high pressure conditions, ice blockage must be considered

In the case of ice blockage, the muffler components sometimes have to withstand a pressure of 30MPa or even higher. The design pressure of a conventional muffler is generally not greater than 3MPa, and the maximum noise reduction is not greater than 38dB(A), which cannot meet the gas noise reduction under high pressure conditions. noise requirements

In addition, the existing mufflers are usually filled with aluminum silicate glass wool, which is extremely harmful to personnel and the environment

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