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Silencer

A technology of muffler and muffler pipe, applied in the direction of sound-producing equipment, instruments, etc., can solve the problems of high cost of exhaust and venting muffler, surrounding system, low noise reduction, etc., and achieves compact structure, low scale and cost, and easy maintenance. Effect

Inactive Publication Date: 2018-04-20
BEIJING INST OF AEROSPACE TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] To sum up, the existing types of exhaust mufflers have the disadvantages of high cost, large resistance, low noise reduction, and the need to be equipped with a surrounding system.

Method used

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] attached by figure 1 , attached figure 2 , attached image 3 Given, the present invention is made up of inlet 1 , shell 2 , expansion section 3 , muffler section 4 , muffler tube bundle 5 and outlet 6 .

[0021] The incoming flow enters the muffler from the inlet 1, and the inlet 1 and the outlet of the exhaust equipment are connected by flange or welding to keep the seal and prevent the noise from spreading.

[0022] The shell 2 is used to prevent noise from being transmitted to the outside of the muffler, and needs to have a certain thickness in order to ensure its sound insulation effect. The greater the thickness, the better the sound insulation effect, but the cost will increase accordingly, generally 8-20mm is selected.

[0023] The area of ​​the expansion section 3 gradually increases along the airflow direction to ...

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Abstract

The invention discloses a silencer comprising an inlet (1), a casing (2), an expanding section (3), a silencing section (4), a silencer tube bundle (5) and an outlet (6). The silencer is suitable forreducing the exhaust noise of the high-speed airflow.

Description

technical field [0001] The invention relates to a muffler, in particular to an exhaust venting muffler, which is suitable for aerodynamic noise control of high-speed airflow discharge. Background technique [0002] Exhaust venting noise is generally produced by the instability of high-speed airflow. In chemical industry, petroleum, electric power, metallurgy and other industries, the exhaust noise of high-temperature, high-pressure, and high-velocity airflow is an important noise source. It has the characteristics of wide frequency spectrum and large noise influence range. [0003] The main types of exhaust and vent mufflers are small hole injection muffler, porous diffusion muffler, throttling and decompression muffler, spray muffler, injection mixed cooling muffler and so on. [0004] The small-hole injection muffler is a muffler with the same diameter as the original exhaust port but closed at the end. There are many small exhaust holes on the pipe wall. The smaller the ...

Claims

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Application Information

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IPC IPC(8): G10K11/16
CPCG10K11/161
Inventor 胡旭坤张奎好李斌曲胜孙树江赵宏张海栋毕明卉张伟郭敬李欣金诚徐鑫刘屹孔凡超郑鑫
Owner BEIJING INST OF AEROSPACE TESTING TECH