Short-section type oscillation cavity for monitoring gas components of natural gas pipeline

Abstract

The invention discloses a short-section type oscillation cavity for monitoring gas components of a natural gas pipeline, which comprises a short-section pipe body connected to a measured natural gas long-distance pipeline, wherein the short section pipe body comprises a sieve type inner layer pipe, a resin coating, an inner reflection layer and an outer reflection layer which are coaxially arranged from inside to outside, and an annulus structure is arranged between the inner reflection layer and the outer reflection layer; the inner reflection layer comprises a sieve type outer layer pipe andan inner mirror reflection layer arranged on the outer surface of the sieve type outer layer pipe; the outer reflection layer comprises an outer steel pipe and an outer mirror reflection layer arranged on the inner surface of the outer steel pipe; the sieve-type inner-layer pipe, the resin coating and the sieve-type outer-layer pipe form a filtering permeation layer for filtering natural gas; theinner mirror reflection layer, the annular structure and the outer mirror reflection layer form an optical oscillation cavity used for containing gas molecules permeating into the annular structure,and meanwhile an optical loop is formed. According to the invention, real-time monitoring of natural gas pipeline gas components and simultaneous on-line collection of multiple components are realized.

Description

technical field [0001] The present invention relates to the real-time monitoring technology of gas components in submarine natural gas pipelines, in particular to a nipple-type oscillating chamber for monitoring gas components in natural gas pipelines, which is suitable for CO2 in common submarine pipelines. 2 、H 2 S, CH 4 Real-time online monitoring of components such as water dew point. Background technique [0002] In the process of natural gas extraction, various associated gases are produced, among which the CO contained in natural gas 2 、H 2 S and other substances dissolve in the water in the pipeline during the transportation process, which will form a corrosive environment and cause corrosion to the pipeline; at the same time, the existence of the above-mentioned associated gas will also reduce the calorific value of natural gas. According to incomplete statistics, the global economic losses caused by corrosion of oil and gas pipelines are as high as tens of bill...

AI Technical Summary

Problems solved by technology

In practical applications, the water dew point is periodically detected by a dew point meter. 2 、H 2 S mostly adopts the method of periodic sampling detection, but the accuracy and real-time performance are poor

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