Customized built-in anti-blockage denoising device for natural gas pipeline

Abstract

The invention belongs to a customized built-in anti-blockage denoising device for a natural gas pipeline and relates to the technical field of pipeline systems. The customized built-in anti-blockage denoising device for the natural gas pipeline is formed by welding a first flange (1), a second flange (2), a silencing outer pipe (3), a silencing inner pipe (4), a seal end (6) and a streamline rectifying shield (8) through flange connecting. The silencing outer pipe (3) with the streamline rectifying shield (8) is fixedly connected with the first flange (1); the silencing inner pipe (4) with the seal end (6) is fixedly connected with the second flange (2) and the silencing outer pipe (3) and the silencing inner pipe (4) are connected by a flange; by taking the first flange (1) and the second flange (2) as the rear parts, multiple seams (5) are circumferentially uniformly distributed in the middle of the silencing outer pipe (3) and the middle front part of the silencing inner pipe (4). The pneumatic noise of the natural gas pipe is controlled in the national standard provisions without generating blockage and influencing the pipeline conveying.

Description

technical field [0001] The invention is a customizable built-in anti-blocking and noise reduction device for natural gas pipelines. It relates to the technical field of piping systems. Background technique [0002] The aerodynamic noise existing in the natural gas pipeline station is mainly generated by pressure regulating valves, manifolds, and pipe diameter reduction. The pressure regulating valve used in the pipeline is the main source of noise. For the pressure regulating valve with its own noise reduction device, most of the noise can meet the requirements, but the noise generated by the ordinary pressure regulating valve without noise reduction device can reach more than 100dB in field measurement. . The noise after the pressure regulating valve is mainly caused by the turbulence and eddy current after the conveyed gas passes through the valve port of the pressure regulating device, that is, the interaction between the turbulent fluid and the pressure regulating devi...

AI Technical Summary

Problems solved by technology

However, the disadvantage is that it is difficult to guarantee the noise reduction effect when the parameters of the noise source change, and the entire device needs to be replaced when replacing, and it is easy to cause ice blockage and blockage for solid impurities containing liquid water and a certain size, and the flow rate will be affected if the operation time is too long , maintenance inconvenience

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