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Rotary machine pipeline silencer

A technology of rotating machinery and muffler, which is applied in the direction of mechanical equipment, machine/engine, rotary piston type/oscillating piston type pump components, etc. It can solve the problems of poor noise reduction effect of large-diameter pipeline systems, etc.

Active Publication Date: 2021-09-10
常熟市思源压缩机产业协同创新中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a rotary mechanical pipeline muffler to solve the problem in the prior art that the pipeline muffler has a poor noise reduction effect on the large-diameter pipeline system

Method used

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  • Rotary machine pipeline silencer
  • Rotary machine pipeline silencer
  • Rotary machine pipeline silencer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In the intake muffler unit 21 , one end of the intake guide tube 14 is connected to the intake guide plate 13 , and the other end of the intake guide tube 14 is inserted into the intake cavity 31 . The end of the intake guide tube 14 connected to the intake guide plate 13 is set as the inner end of the intake guide tube 14 , and the end of the intake guide tube 14 embedded in the air intake cavity 31 is defined as the outer end. The airflow in the air intake chamber 31 is guided into the rectifying and muffler damping unit 22 through the air intake duct 14. The length of the intake duct 14 is different, causing the intake duct 14 to be embedded in the air intake cavity. The lengths inside 31 are also different, and the constructed insertion pipe muffler can attenuate sound sources of different wavelengths and frequencies, thereby widening the noise reduction frequency range of the intake muffler unit 21 and expanding the performance of the large-flow rotating machinery p...

Embodiment 2

[0048] Embodiment 2 Rectification and silencer damping unit 22

[0049] The entire rectification and noise reduction damping unit 22 is arranged in the middle part of the outer tube 11, and is arranged between two deflectors 13. Specifically, the rectification and noise reduction damping unit 22 mainly includes a rectification tube 15, a damping material 16 and a support frame 17, each The intake end of the rectifying tube 15 communicates with the intake guide tube 14 , and the exhaust end of the rectifying tube 15 communicates with the exhaust guide tube 19 . The rectifying pipe 15 can be the same draft pipe 20 as the air intake guide pipe 14 , or it can be a broadband muffler 40 with noise reduction function. The rectifying tube 15 is arranged in the damping material 16 and the support frame 17 .

[0050] Specifically, along the length direction of the entire muffler, M support frames 17 are arranged between the intake deflector 13 and the exhaust deflector 24, where M is a...

Embodiment 3

[0059] Embodiment 3 Exhaust muffler unit 23

[0060] In the exhaust muffler unit 23, the area surrounded by the outer pipe 11, the flange 12 and the exhaust deflector 24 is the exhaust chamber 32, and the exhaust muffler unit 23 is embedded in the exhaust chamber 32 and 32 in the exhaust guide pipe 19, the exhaust muffler unit 23 utilizes the exhaust chamber 32 and the exhaust guide pipe 19 to build an intubated muffler structure to attenuate the airflow and reduce noise. When the lengths of the exhaust guide pipe 19 embedded in the exhaust chamber 32 are not exactly the same, the wavelength and frequency of the attenuated sound source are also different, so the noise reduction frequency range of the exhaust muffler unit 23 is widened, and the range of the noise reduction frequency of the exhaust muffler unit 23 is expanded. The application fields of the pipeline muffler 1 for rotating machinery are described.

[0061] Preferably, the structure of the exhaust muffler unit 23 ...

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Abstract

The invention provides a rotary machine pipeline silencer, the technical scheme of a plurality of channels and a small drift diameter is adopted to rectify and attenuate airflow in a pipeline system, and based on the principle of a pipe inserting type silencer, the effective length of the portion, embedded into a cavity, of a flow guide pipe is adjusted, and the noise reduction frequency range of the silencer is widened. The rotary machine pipeline silencer is directly installed in a rotary machine pipeline system, airflow pulsation of a rotary machine is attenuated to the maximum extent, and airflow noise of the rotary machine is reduced. The silencer is applied to the rotary machine pipeline system to attenuate airflow and reduce noise, and the silencer has the advantages of being low in investment, quick in effect taking and good in effect and is an ideal choice for solving the problem of rotary machine airflow noise. The rotary machine pipeline silencer is directly installed in the rotary machine pipeline system, airflow pulsation of the rotary machine is attenuated to the maximum extent, and airflow noise of the rotary machine is reduced.

Description

technical field [0001] The invention belongs to the field of vibration reduction and noise reduction of fluid machinery, and in particular relates to a muffler for a rotating machinery pipeline. Background technique [0002] Rotating machinery inevitably produces airflow pulsation during the working process, which induces aerodynamic noise and radiates outward through the piping system. Due to the difficulty of controlling the airflow pulsation during the working process of rotating machinery, the investment is large and the cycle is long, so the pipeline muffler is widely used in the field of noise reduction of fluid machinery. [0003] The larger the diameter of the pipeline muffler, the longer the wavelength of the sound waves allowed to pass through the pipeline muffler, the corresponding sound source frequency is reduced, the frequency range of attenuating noise is narrowed, and the effect of attenuating noise is reduced. Therefore, some pipeline mufflers on the market...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/06
CPCF04C29/06
Inventor 周明龙陈文卿邢子文何志龙
Owner 常熟市思源压缩机产业协同创新中心